CN109200729B - Feed production unit hot and wet waste gas heat recovery and waste gas circulation treatment process - Google Patents
Feed production unit hot and wet waste gas heat recovery and waste gas circulation treatment process Download PDFInfo
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- CN109200729B CN109200729B CN201811318570.XA CN201811318570A CN109200729B CN 109200729 B CN109200729 B CN 109200729B CN 201811318570 A CN201811318570 A CN 201811318570A CN 109200729 B CN109200729 B CN 109200729B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23N—MACHINES OR APPARATUS FOR TREATING HARVESTED FRUIT, VEGETABLES OR FLOWER BULBS IN BULK, NOT OTHERWISE PROVIDED FOR; PEELING VEGETABLES OR FRUIT IN BULK; APPARATUS FOR PREPARING ANIMAL FEEDING- STUFFS
- A23N17/00—Apparatus specially adapted for preparing animal feeding-stuffs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/91—Bacteria; Microorganisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
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- Chemical Kinetics & Catalysis (AREA)
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- Mechanical Engineering (AREA)
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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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- Food Science & Technology (AREA)
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- Drying Of Gases (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
The invention belongs to the technical field of feed processing, and discloses a process for recovering heat of hot and wet waste gas and circularly treating the waste gas of a feed production unit, which is used for treating high-temperature and high-humidity waste gas led out by the feed production unit. The waste gas is led in from the air inlet end of the circulating pipeline, is treated by the cyclone separator, the dust remover, the noise elimination filter, the dehumidification and cooling heat recovery device and the sterilizer in sequence, and is led out from the air outlet end of the circulating pipeline. The invention is provided with the circulating pipeline of the cyclone separator, the dust remover, the noise elimination filter, the dehumidification and cooling heat recovery device and the sterilizer, and can reliably and safely treat the waste gas led out by the feed production unit.
Description
Technical Field
The invention relates to the technical field of feed processing, in particular to a process for recovering heat of hot and wet waste gas and recycling the waste gas of a feed production unit.
Background
Along with the development of economy in China, the living standard of residents is continuously improved, and the residents have greater and greater demands on livestock and poultry meat products, so that the rapid development of livestock and poultry breeding industry is brought, and the prosperity of the feed industry is correspondingly promoted. However, the feed processing and production industry is a large energy consumption household and a large waste gas pollution household, so that the contradiction between feed processing and production and environmental protection is generated.
The existing environmental protection technology only starts from the aspect of environmental pollution, and neglects the recycling of heat energy in the process of feed processing and production.
Disclosure of Invention
The invention aims to provide a feed production unit hot and wet waste gas heat recovery and waste gas circulation treatment process, which can recycle heat energy in the feed processing production process while treating waste gas.
In order to achieve the purpose, the invention adopts the following technical scheme:
a hot and humid waste gas heat recovery and waste gas circulation treatment process of a feed production unit is used for treating high-temperature and high-humidity waste gas discharged by each production unit of feed, and comprises a circulation pipeline, a cyclone separator, a dust remover, a noise elimination filter, a dehumidification and cooling heat recovery device and a sterilizer, wherein the cyclone separator, the dust remover, the noise elimination filter, the dehumidification and cooling heat recovery device and the sterilizer are arranged on the circulation pipeline;
waste gas is led in from the air inlet end of the circulating pipeline, is treated by the cyclone separator, the dust remover, the noise elimination filter, the dehumidification and cooling heat recovery device and the sterilizer in sequence and then is led out from the air outlet end of the circulating pipeline;
the cyclone separator can derive the solid particle in the waste gas, be provided with the rupture membrane in the dust remover, dehumidification cooling heat reclamation device is arranged in dehumidifying, cooling and retrieving the heat energy in the waste gas to waste gas.
Preferably, the feed production unit is a cooler, the cooler is used for cooling materials in the material production process, the exhaust port is an air outlet of the cooler, and the air supplement port is an air inlet of the cooler.
Preferably, the feed production unit is a material processing device, the exhaust port is a waste gas outlet of the material processing device, and the air supplementing port is an air supplementing port of the material processing device.
Preferably, an air volume distribution valve is further arranged on the circulation pipeline, the air volume distribution valve is located between the dust remover and the noise elimination filter, a first air outlet of the air volume distribution valve is communicated with the noise elimination filter, and a second air outlet of the air volume distribution valve is communicated with the circulation pipeline between the dehumidification and temperature reduction heat recovery device and the sterilizer.
Preferably, a fan and a silencer are further arranged on the circulation pipeline, the fan is located between the dust remover and the air volume distribution valve, and the silencer is located between the fan and the air volume distribution valve.
Preferably, a fan and a silencer are further arranged on the circulating pipeline, the fan is located between the dehumidification and cooling heat recovery device and the sterilizer, and the silencer is located between the fan and the sterilizer;
and a second air outlet of the air quantity distribution valve is communicated with the circulating pipeline between the dehumidification and cooling heat recovery device and the fan.
Preferably, the dehumidification and cooling heat recovery device is communicated with a heat production system, and the heat production system is used for producing hot water, heat conduction oil or steam by using the heat recovered by the dehumidification and cooling heat recovery device.
Preferably, the dehumidification and cooling heat recovery device is communicated with a heat storage system, and the heat storage system is used for storing and using hot water, heat conduction oil or steam produced by the dehumidification and cooling heat recovery device by utilizing recovered heat.
Preferably, the circulating pipeline is further provided with a breather valve, the breather valve is positioned between the dehumidification cooling heat recovery device and the sterilizer, and a breathing port of the breather valve is communicated with the external atmosphere.
Preferably, the breathing port of the breathing valve is communicated with the outside atmosphere through a filtering device.
The invention has the beneficial effects that:
the arrangement of the circulating pipeline with the cyclone separator, the dust remover, the noise elimination filter, the dehumidification and cooling heat recovery device and the sterilizer can reliably and safely treat the waste gas led out by the feed production unit, so that the waste gas after being treated can be circularly utilized by a feed production unit, the arrangement of the explosion-proof membrane in the dust remover, the stable operation of the subsequent equipment can be ensured while removing the dust in the waste gas, the explosion caused by the dust under extreme conditions can be avoided, the safety of the process is improved, the reliable operation of the dehumidification and cooling heat recovery device and the arrangement of the dehumidification and cooling heat recovery device can be ensured by the arrangement of the noise elimination filter, make when exhaust-gas treatment, can also carry out effectual recovery with the heat in the waste gas, the setting of steriliser for waste gas is finally to be conducted reuse through leading-in fodder production unit after the sterilization.
Drawings
FIG. 1 is a schematic diagram of a vertical counter-flow cooler for a feed production unit in a process of heat recovery from hot and humid exhaust gas and recycling treatment of exhaust gas in a feed production unit according to an embodiment of the present invention;
FIG. 2 is another schematic diagram of a vertical counterflow cooler for a feed production unit in a process of heat recovery from hot and humid exhaust gas and recycling treatment of exhaust gas in the feed production unit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a horizontal cooler for a feed production unit in a process of recycling heat of hot and humid exhaust gas and recycling treatment of exhaust gas in the feed production unit according to an embodiment of the present invention;
FIG. 4 is another schematic diagram of the feed production unit being a horizontal cooler in the process of recycling heat from hot and humid exhaust gas and recycling treatment of exhaust gas in the feed production unit according to the embodiment of the present invention;
FIG. 5 is a schematic diagram of a feed production unit being a hammer mill in a process of heat recovery from hot and humid exhaust gas and recycling treatment of exhaust gas in a feed production unit according to an embodiment of the present invention;
FIG. 6 is another schematic diagram of the feed production unit being a hammer mill in the process of recycling heat of hot and humid exhaust gas of the feed production unit and recycling treatment of exhaust gas according to the embodiment of the present invention;
FIG. 7 is a schematic diagram of a feed production unit of an ultra-fine pulverizer in a process of recycling heat and moisture in waste gas and recycling waste gas in the feed production unit according to an embodiment of the present invention;
FIG. 8 is another schematic diagram of the feed production unit being an ultra-fine pulverizer in the process of recycling heat and moisture in waste gas and recycling waste gas in the feed production unit according to the embodiment of the present invention;
FIG. 9 is a schematic diagram of a feed production unit being an expander in the process of recycling heat from hot and humid exhaust gas and recycling exhaust gas of the feed production unit according to the embodiment of the present invention;
FIG. 10 is a schematic view of another configuration of a feed production unit, which is a bulking machine, in the process of recycling heat from hot and humid exhaust gas and recycling exhaust gas of the feed production unit according to the embodiment of the present invention;
FIG. 11 is a schematic diagram of a configuration of a feed production unit being a granulator in a process of recycling heat from hot and humid exhaust gas of the feed production unit and recycling exhaust gas according to an embodiment of the present invention;
FIG. 12 is another schematic diagram of a feed production unit being a granulator in a process of recycling heat from hot humid exhaust gas and recycling exhaust gas from the feed production unit according to an embodiment of the present invention;
FIG. 13 is a schematic structural diagram of a feed production unit as a conditioning system in the process of recycling heat and humidity of waste gas and recycling waste gas in the feed production unit according to an embodiment of the present invention;
FIG. 14 is a schematic view of another configuration of a feed production unit as a conditioning system in the process of recycling heat from hot and humid exhaust gas of the feed production unit and recycling the exhaust gas according to the embodiment of the present invention;
in the figure:
100. a circulation line;
1. a cyclone separator;
2. a dust remover;
3. a noise elimination filter;
4. a dehumidification cooling heat recovery device;
5. a sterilizer;
6. an air volume distribution valve;
7. a fan;
8. a muffler;
9. a breather valve; 91. a breathing port;
10. a filtration device;
201. a vertical counter-flow cooler; 202. a horizontal cooler; 203. a hammer mill; 204. an ultrafine pulverizer; 205. a bulking machine; 206. a granulator; 207. a tempering system.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
In the current feed production process, the coarse crushing, the ultrafine crushing, the pre-conditioning, the puffing, the granulating and the cooling are all production links for generating a large amount of waste gas, one puffed feed production line with 10-15 tons of output per hour has the average waste gas discharge amount of about 160000m3H is used as the reference value. There are several treatment methods for these waste gases: 1. direct discharge to the atmosphere; 2. a plasma purification process; 3. spray washing, an ultraviolet light catalysis process and sewage treatment; 4. a microorganism filtering and purifying process.
The first treatment mode is directly discharged to the atmosphere, so that the environment is greatly polluted, the requirements of people on living environment are completely not met at present, the national requirements on environmental protection are also not met, and the strategic target of national sustainable development is not facilitated. The latter treatment modes have the disadvantages of large occupied area of environment-friendly treatment equipment and large construction engineering quantity; the one-time investment is high, the operation cost is high, and the enterprise burden is increased; the influence on the surrounding environment after the environmental protection treatment equipment is built cannot be eliminated; the problems of the prior waste of heat energy and the like are not recovered.
As shown in fig. 1 to 14, the present invention provides a process for recycling heat and humidity of hot and humidity exhaust gas and recycling exhaust gas of a feed production unit, which is used for processing high temperature and humidity exhaust gas led out by the feed production unit, and comprises a circulation pipeline 100, and a cyclone separator 1, a dust collector 2, a noise elimination filter 3, a dehumidification and cooling heat recycling device 4 and a sterilizer 5 which are arranged on the circulation pipeline 100, wherein an air inlet end of the circulation pipeline 100 is communicated with an air outlet of the feed production unit, and an air outlet end of the circulation pipeline 100 is communicated with an air supplement port of the feed production unit. The waste gas is led in from the air inlet end of the circulating pipeline 100, is treated by the cyclone separator 1, the dust remover 2, the noise elimination filter 3, the dehumidification and cooling heat recovery device 4 and the sterilizer 5 in sequence, and then is led out from the air outlet end of the circulating pipeline 100. Cyclone 1 can derive the solid particle in the waste gas, is provided with the rupture membrane in the dust remover 2, and dehumidification cooling heat reclamation device 4 is arranged in dehumidifying, cooling and the heat energy in the recovery waste gas to waste gas.
In the invention, the arrangement of the circulating pipeline 100 with the cyclone separator 1, the dust remover 2, the noise elimination filter 3, the dehumidification and cooling heat recovery device 4 and the sterilizer 5 can reliably and safely treat the waste gas led out by the feed production unit, so that the exhaust gases after treatment can be recycled to the feed production unit, the provision of the bursting disk in the dust separator 2, while removing the dust in the waste gas, the stable operation of the subsequent equipment can be ensured, the explosion caused by the dust under extreme conditions can be avoided, the safety of the process is improved, the reliable operation of the dehumidification and cooling heat recovery device 4 and the arrangement of the dehumidification and cooling heat recovery device 4 can be ensured by the arrangement of the noise elimination filter 3, make when exhaust-gas treatment, can also carry out effectual recovery with the heat in the waste gas, the setting of steriliser 5 for waste gas is finally through leading-in fodder production unit after the sterilization and carry out reuse.
In the present embodiment, the dehumidification-cooling heat recovery apparatus 4 performs cooling and dehumidification on the exhaust gas by using a heat pump technology, and performs heat recovery.
The feed production unit can be any unit which needs to lead out waste gas and supplement the gas on the production line. In the present embodiment, it may specifically be the following two configurations.
In one configuration, the feed production unit is a cooler, the cooler is used for cooling the material in the material production process, the exhaust port is the air outlet of the cooler, and the air supplement port is the air inlet of the cooler. The cooler can be a vertical counter-flow cooler 201 or a horizontal cooler 202 on the feed processing line. In this configuration, the cooler can cool the material and treat the exhaust gas by using the circulation line 100 in the material processing production, and the exhaust gas is not discharged to the outside in the whole process, and the heat energy in the exhaust gas can be recovered.
In another configuration, the feed production unit is a material processing device, the exhaust port is a waste gas exhaust port of the material processing device, and the air supplementing port is an air supplementing port of the material processing device. The material processing equipment can be specifically the production equipment of the theme units such as the hammer mill 203, the ultrafine mill 204, the bulking machine 205, the granulator 206 or the conditioning system 207 on the feed processing line.
In this embodiment, the circulation pipeline 100 is further provided with an air volume distribution valve 6, the air volume distribution valve 6 is located between the dust collector 2 and the noise elimination filter 3, a first air outlet of the air volume distribution valve 6 is communicated with the noise elimination filter 3, and a second air outlet is communicated with the circulation pipeline 100 between the dehumidification and temperature reduction heat recovery device 4 and the sterilizer 5. The air flow distribution valve can adjust the air quantity entering the dehumidification and cooling heat recovery device 4 according to the temperature and the humidity of the waste gas exhausted from the exhaust port of the feed production unit, and the optimization of system operation is achieved.
Specifically, the circulation pipeline 100 is further provided with a fan 7 and a silencer 8, the fan 7 is used for increasing the circulation rate of the exhaust gas in the circulation pipeline 100, and the silencer 8 is used for reducing the noise generated in the exhaust gas circulation treatment process. The positions of the fan 7 and the muffler 8 are set to two kinds: in one, the fan 7 is positioned between the dust remover 2 and the air volume distribution valve 6, and the silencer 8 is positioned between the fan 7 and the air volume distribution valve 6; in another case, the fan 7 is located between the dehumidification and cooling heat recovery device 4 and the sterilizer 5, and the muffler 8 is located between the fan 7 and the sterilizer 5 (at this time, the second air outlet of the air volume distribution valve 6 is communicated with the circulation pipeline 100 between the dehumidification and cooling heat recovery device 4 and the fan 7).
More specifically, the dehumidification and cooling heat recovery device 4 is communicated with a heat production system, and the heat production system is used for producing hot water, heat transfer oil or steam by utilizing the heat recovered by the dehumidification and cooling heat recovery device 4.
More specifically, the dehumidification and cooling heat recovery device 4 is communicated with a heat storage system, and the heat storage system is used for storing and using hot water, heat conduction oil or steam produced by the dehumidification and cooling heat recovery device 4 by utilizing recovered heat.
In this embodiment, the circulation pipeline 100 is further provided with a breathing valve 9, the breathing valve 9 is located between the dehumidification and cooling heat recovery device 4 and the sterilizer 5 (in the second arrangement of the fan 7 and the muffler 8, the breathing valve 9 is located between the muffler 8 and the sterilizer 5), and the breathing port 91 of the breathing valve 9 is communicated with the outside atmosphere. The setting of breather valve 9 has avoided appearing the negative pressure in the circulating line 100, has ensured the reliable operation of the wet waste gas heat recovery of whole feed production unit heat and waste gas circulation treatment process.
Specifically, the breathing port 91 of the breathing valve 9 is communicated with the outside atmosphere through the filter device 10. By the arrangement, when negative pressure is generated in the circulating pipeline 100, external supplementary air can enter the feed production unit after being sequentially treated by the filter device 10 and the sterilizer 5, so that the processing and production reliability of the feed production unit is improved.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. A feed production unit hot and wet waste gas heat recovery and waste gas circulation treatment process is characterized by being used for treating high-temperature and high-humidity waste gas led out by a feed production unit and comprising a circulation pipeline (100), a cyclone separator (1), a dust collector (2), a noise elimination filter (3), a dehumidification and cooling heat recovery device (4) and a sterilizer (5), wherein the cyclone separator, the dust collector, the noise elimination filter (2), the noise elimination filter (3), the dehumidification and cooling heat recovery device and the sterilizer (5) are arranged on the circulation pipeline (100), the air inlet end of the circulation pipeline (100) is communicated with an air outlet of the feed production unit, and the air outlet end of the circulation pipeline (100) is communicated with an air;
waste gas is led in from the air inlet end of the circulating pipeline (100), is treated by the cyclone separator (1), the dust remover (2), the noise elimination filter (3), the dehumidification and cooling heat recovery device (4) and the sterilizer (5) in sequence and then is led out from the air outlet end of the circulating pipeline (100);
the cyclone separator (1) can guide out solid particles in the waste gas, the dust remover (2) is internally provided with an explosion-proof membrane, and the dehumidification and cooling heat recovery device (4) is used for dehumidifying and cooling the waste gas and recovering heat energy in the waste gas;
still be provided with amount of wind distribution valve (6) on circulating line (100), amount of wind distribution valve (6) are located dust remover (2) with between noise elimination filter (3), the first air outlet of amount of wind distribution valve (6) communicate in noise elimination filter (3), the second air outlet communicate in dehumidification cooling heat reclamation device (4) with between steriliser (5) on circulating line (100).
2. The process for heat recovery and waste gas recycling of hot and humid waste gas of feed production unit according to claim 1, wherein the feed production unit is a cooler for cooling the material during the production of the material, the exhaust port is an air outlet of the cooler, and the air supplement port is an air inlet of the cooler.
3. The process for heat recovery and waste gas recycling treatment of hot and humid waste gas of feed production unit according to claim 1, wherein the feed production unit is a material treatment device, the exhaust port is a waste gas exhaust port of the material treatment device, and the air supplement port is an air supplement port of the material treatment device.
4. The process for the heat recovery and recycling treatment of hot and humid exhaust gas of feed production unit according to claim 1, wherein a fan (7) and a silencer (8) are further disposed on the circulation pipeline (100), the fan (7) is located between the dust collector (2) and the air volume distribution valve (6), and the silencer (8) is located between the fan (7) and the air volume distribution valve (6).
5. The process for the heat recovery and recycling treatment of hot and humid exhaust gas of feed production unit according to claim 1, wherein a fan (7) and a muffler (8) are further disposed on the circulating pipeline (100), the fan (7) is located between the dehumidifying and cooling heat recovery device (4) and the sterilizer (5), and the muffler (8) is located between the fan (7) and the sterilizer (5);
and a second air outlet of the air volume distribution valve (6) is communicated with the dehumidification and cooling heat recovery device (4) and the circulating pipeline (100) between the fans (7).
6. The feed production unit hot and humid exhaust gas heat recovery and exhaust gas circulation treatment process according to claim 1, wherein the dehumidifying and cooling heat recovery device (4) is communicated with a heat production system, and the heat production system is used for producing hot water, heat transfer oil or steam by using heat recovered by the dehumidifying and cooling heat recovery device (4).
7. The feed production unit hot and humid exhaust gas heat recovery and exhaust gas circulation treatment process according to claim 1, wherein the dehumidification and cooling heat recovery device (4) is communicated with a heat storage system, and the heat storage system is used for storing and using hot water, heat transfer oil or steam produced by the dehumidification and cooling heat recovery device (4) by using recovered heat.
8. The process for recycling heat and moisture waste gas and recycling waste gas of a feed production unit according to any one of claims 1 to 7, wherein a breather valve (9) is further disposed on the circulation pipeline (100), the breather valve (9) is disposed between the dehumidifying and cooling heat recycling device (4) and the sterilizer (5), and a breathing port (91) of the breather valve (9) is communicated with the outside atmosphere.
9. The process for the heat recovery and recycling treatment of hot and humid exhaust gas of a feed production unit according to claim 8, wherein the breathing port (91) of the breathing valve (9) is connected to the outside atmosphere through a filter device (10).
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| CN109909048A (en) * | 2019-04-10 | 2019-06-21 | 广州金鹏环保工程有限公司 | A kind of zero waste gas emission material-pulverizing device |
| CN113082858A (en) * | 2021-03-03 | 2021-07-09 | 佛山市冠恒丰机电设备有限公司 | Tail gas processing apparatus for feed production |
| CN113082881A (en) * | 2021-04-26 | 2021-07-09 | 通威股份有限公司 | Waste gas recovery zero-emission system and method for feed production |
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| CN109200729A (en) | 2019-01-15 |
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Denomination of invention: A process for heat recovery and waste gas circulation treatment of hot and wet waste gas in feed production unit Effective date of registration: 20211102 Granted publication date: 20210326 Pledgee: Bank of Guangzhou branch of the Bank of Guangzhou Science City Branch Pledgor: GUANGZHOU JP.EPE Co.,Ltd. Registration number: Y2021980011713 |
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