CN109546476B - Female end signal transmission module for high-speed differential signal connector - Google Patents

Female end signal transmission module for high-speed differential signal connector Download PDF

Info

Publication number
CN109546476B
CN109546476B CN201910020963.0A CN201910020963A CN109546476B CN 109546476 B CN109546476 B CN 109546476B CN 201910020963 A CN201910020963 A CN 201910020963A CN 109546476 B CN109546476 B CN 109546476B
Authority
CN
China
Prior art keywords
module
signal transmission
pressing plate
concave cavities
concave
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910020963.0A
Other languages
Chinese (zh)
Other versions
CN109546476A (en
Inventor
代秀云
江帆
何洪
张洺诚
邱雪梅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan Huafeng Technology Co Ltd
Original Assignee
Sichuan Huafeng Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sichuan Huafeng Technology Co Ltd filed Critical Sichuan Huafeng Technology Co Ltd
Priority to CN201910020963.0A priority Critical patent/CN109546476B/en
Publication of CN109546476A publication Critical patent/CN109546476A/en
Application granted granted Critical
Publication of CN109546476B publication Critical patent/CN109546476B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6581Shield structure
    • H01R13/6585Shielding material individually surrounding or interposed between mutually spaced contacts
    • H01R13/6588Shielding material individually surrounding or interposed between mutually spaced contacts with through openings for individual contacts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02Contact members
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40Securing contact members in or to a base or case; Insulating of contact members
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46Bases; Cases
    • H01R13/514Bases; Cases composed as a modular blocks or assembly, i.e. composed of co-operating parts provided with contact members or holding contact members between them

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

The application discloses a female end signal transmission module for a high-speed differential signal connector, which comprises a module shell, signal transmission reeds and a plastic package module, wherein a plurality of concave cavities are formed in the module shell, the signal transmission reeds are arranged in the concave cavities, a pressing plate is arranged at one side edge of the module shell, which is provided with the concave cavities, at intervals, and is positioned between adjacent concave cavities, square bosses are arranged on the pressing plate, the plastic package module covers the concave cavities and seals the concave cavities, so that the signal transmission reeds form a closed signal channel, and a gap is reserved between the plastic package module and the pressing plate. The pressing plate and the square boss are arranged on the module shell, and the square boss has elasticity, so that insufficient contact caused by uneven boss heights in all directions among a plurality of components can be avoided.

Description

Female end signal transmission module for high-speed differential signal connector
Technical Field
The application relates to the technical field of high-speed differential signal connectors, in particular to a female-end signal transmission module for a high-speed differential signal connector.
Background
In the existing high-speed differential signal connector, the reflow paths around the differential signals in the transmission link are realized by reducing the reflow paths through multipoint connection and through mutual communication among metal shielding pieces, and other structures are required to be assisted for keeping the consistent space between the metals, so that the process is complex and difficult to control.
In the current high-speed differential signal connector, due to the limitation of the structure, crosstalk among signals is serious, differential signals interfere with each other, and finally the transmission effect of the signal connector is affected.
Disclosure of Invention
The application aims to provide a female-end signal transmission module for a high-speed differential signal connector, which solves the problem that insufficient contact is possibly caused by uneven contact points when a plurality of components in the signal transmission module are assembled.
In order to solve the technical problems, the application adopts the following technical scheme:
a female end signal transmission module for a high-speed differential signal connector comprises a module shell, signal transmission reeds and a plastic package module, wherein a plurality of concave cavities are formed in the module shell, the signal transmission reeds are installed in the concave cavities, a pressing plate is arranged at one side edge of each concave cavity on the module shell at intervals, the pressing plate is located between adjacent concave cavities, square bosses are arranged on the pressing plate, the plastic package module covers the concave cavities and seals the concave cavities, so that the signal transmission reeds form a closed signal channel, and a gap is reserved between the plastic package module and the pressing plate.
Preferably, the plastic package modules are in one-to-one correspondence with the concave cavities, the adjacent plastic package modules on the concave cavities are connected into a whole through transverse ribs, and the vicinity of two end parts of the plastic package modules is connected with the transverse ribs.
Preferably, the two transverse ribs at two ends of the plastic package module are arranged in a 90-degree direction, a groove matched with the transverse ribs is formed in the module shell, and a gap is formed between the transverse rib close to the pressing plate and the pressing plate.
Preferably, the two signal transmission reeds form differential pairs and are arranged in the same concave cavity, and the two signal transmission reeds in each differential pair are symmetrically arranged.
Preferably, the concave cavities are distributed according to the differential signal routing paths of the signal transmission reeds, and the cavity edges of the concave cavities are spaced from the differential routing edges of the differential signal transmission reeds.
Preferably, the differential signal wiring path extends from one side of the module case to an adjacent side of the module case, and the contact terminal of the signal transmission reed extends to the outside of the module case.
Preferably, the surfaces of the module cases are each covered with a plating layer.
Preferably, a shield mounting groove for mounting a shield is formed on a side of the module case away from the signal transmission reed contact terminal, and a mounting projection is provided at an end of the side.
Compared with the prior art, the application has the beneficial effects that:
according to the application, the plurality of concave cavities are arranged on the module shell in the female end signal transmission module of the high-speed differential signal connector, the cavities are distributed according to the differential signal wiring paths, and the signal transmission reeds are fixed in the concave cavities, so that a closed signal channel is formed, and finally, the concave cavities are distributed on three sides around the transmitted differential signals in an electroplating way, so that the mutual interference between differential signal pairs can be reduced.
On the other hand, the pressing plate and the square boss are arranged on the module shell, the square boss has elasticity, insufficient contact caused by uneven boss heights in all directions among a plurality of components can be avoided, meanwhile, a gap is reserved between the plastic package module and the pressing plate, and the direction boss on the end face of the packaging pressing plate has elasticity.
Drawings
Fig. 1 is a schematic structural view of the present application.
Fig. 2 is a schematic structural view of a module case according to the present application.
Fig. 3 is a schematic structural view of the signal transmission reed of the present application mounted on a module housing.
Fig. 4 is a schematic structural view of the plastic package module and the transverse ribs of the present application.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
Referring to fig. 1, for one embodiment of the present application, a female-end signal transmission module for a high-speed differential signal connector includes a module housing 101, a signal transmission reed 102, and a plastic package module 103, where the module housing 101 is provided with a plurality of concave cavities 104, the signal transmission reed 102 is installed in the concave cavities 104, and the plastic package module 103 covers the concave cavities 104 and seals the concave cavities 104, so that the signal transmission reed 102 forms a closed signal channel; through the structure, the concave cavities are plated and distributed on three surfaces around the transmission differential signal, so that interference among differential signal pairs can be reduced.
Fig. 2 shows a schematic structural view of the module case 101, and according to the display of the module case 101, a concave cavity 104 is provided on the surface of the module case 101, and the concave cavity 104 takes a curved groove shape, and the concave cavity 104 extends from one side of the module case 101 toward an adjacent side.
A pressing plate 109 is disposed at a side of the module housing 101 where the concave cavity 104 is formed, and the pressing plate 109 is located between the adjacent concave cavities, a square boss 1091 is disposed on the pressing plate, and a gap is formed between the plastic package module 103 and the pressing plate 109. Through setting up clamp plate 109 and set up square boss 1091 in the outside of clamp plate 109, square boss 1091 has elasticity, can avoid the contact inadequately that each square boss height is uneven to lead to between a plurality of subassemblies, has the clearance simultaneously between plastic module 103 and clamp plate 109 can guarantee that the square boss of clamp plate terminal surface has elasticity.
Fig. 3 shows a schematic structural view of the signal transmission reed 102 mounted on the module case 101, and the signal transmission reed 102 is mounted along the direction of the concave cavity 104 when the signal transmission reed 102 is mounted in the concave cavity 104. During installation, the plastic package module 103 is divided into two pieces, each two signal transmission reeds 102 form a differential pair, and one signal transmission reed 102 is installed to cover one plastic package module 103, so that the two signal transmission reeds 102 between the same differential pair form a distance, and are convenient to form fit with a pin of a male end.
Further, according to another embodiment of the present application, on the basis of the above embodiment, the plastic package modules 103 are in one-to-one correspondence with the concave cavities 104, the plastic package modules 103 on adjacent concave cavities 104 are connected into a whole through transverse ribs 107, and the vicinity of two end portions of the plastic package modules 103 are connected with the transverse ribs 107. To the horizontal muscle 107 on this plastic envelope module 103, all be provided with on each spill cavity 104 with the plastic envelope module of this spill cavity 104 looks adaptation, in order to embody the stability after the structure equipment, consequently link as an organic wholely the plastic envelope module on each spill cavity 104 through horizontal muscle 107 to all be provided with horizontal muscle near the both ends of plastic envelope module 103 and connect fixedly, conveniently stabilize the difference pair that signal transmission reed 102 constitutes and fix, realize the convenience of structure installation and overall structure's steadiness simultaneously.
Further, according to another embodiment of the present application, on the basis of the above embodiment, two transverse ribs 107 at two ends of the plastic package module 103 are disposed in a 90 degree direction, and a groove 108 adapted to the transverse ribs 107 is disposed on the module housing 101, and a gap is formed between the transverse ribs 107 near the pressing plate 109 and the pressing plate.
In fig. 4, the connection structure of the plastic package module 103 and the transverse ribs 107 is shown, and as seen from fig. 4, in this embodiment, three plastic package modules 103 are respectively arranged corresponding to three concave cavities 104, the plastic package modules 103 are connected into a whole through two transverse ribs 107 arranged in a 90-degree direction on the plastic package modules 103, and when in installation, only the plastic package modules 103 connected into a whole through the transverse ribs 107 need to be covered on the concave cavities 104 according to corresponding positions, so that the structure is stable and convenient to install, and meanwhile, in order to enable the transverse ribs 107 to be attached to the module housing 101 more, grooves 108 matched with the transverse ribs 107 are formed on the module housing 101; in addition, in order to minimize the mutual interference between the differential signal pairs by using all the grooves or concave cavities, it is preferable to set the two transverse ribs 107 on the plastic package module 103 in a 90 degree direction, so as to avoid any slotting to affect the crosstalk between signals. In addition, since the transverse rib 107 just contacts the pressing plate, a gap is formed between the transverse rib 107 and the pressing plate.
Further, for another embodiment of the present application, based on the above embodiment, the two signal transmission reeds 102 are installed in the same concave cavity 104 as a differential pair, and the two signal transmission reeds 102 in each differential pair are symmetrically disposed. In this embodiment, in order to mate with the pin in the male connector, two signal transmission reeds 102 need to be fixed in the same concave cavity 104, and the two signal transmission reeds 102 form a differential pair for mating with the pin of the male connector, and the contact terminals of the signal transmission reeds 102 mated with the pin of the male connector are in opposite wavy bending arrangement, and perform signal transmission with the pin of the male connector.
Further, for another embodiment of the present application, based on the above embodiment, the concave cavity 104 is distributed according to the differential signal routing paths of the signal transmission reed 102, and a cavity edge of the concave cavity 104 and a differential routing edge of the differential signal transmission reed 102 have a space. In this embodiment, the cavities are distributed according to differential paths, so that on one hand, the return paths are shortened as much as possible, and the crosstalk between differential signals is reduced, and on the other hand, the concave cavities are at a certain distance from the differential signals, so as to perform impedance matching better.
Further, for another embodiment of the present application, on the basis of the above embodiment, the differential signal routing path extends from one side of the module housing 101 to an adjacent side of the module housing 101, and the contact terminal 1021 of the signal transmission reed 102 extends to the outside of the module housing 101. In this embodiment, the paths of the differential wires are defined, and since the signal transmission reed 102 is to transmit signals, both ends of the signal transmission reed 102 may transmit signals with other structures, so according to the transmission principle of the signal connector, the signal transmission reed 102 is in an arc-shaped curved arrangement, and therefore the paths of the differential wires extend from one side of the module housing 101 to the adjacent side of the module housing 101, so that the contact terminal 1021 of the signal transmission reed 102 is matched with the male pin, and the contact terminal 1021 of the signal transmission reed 102 extends to the outside of the module housing 101.
Further, for another embodiment of the present application, the surface of the module case 101 is covered with a plating layer on the basis of the above embodiment. The electroplated layer can be an electroplated nickel, gold, silver, copper and other conductive metal materials; in addition, the module housing 101 may be made of any suitable material that can make the module housing 101 conductive, such as adding metal fiber and graphite into the module housing; after the surface of the module shell 101 is electroplated, concave cavities are electroplated on three surfaces around the transmission differential signal, so that signal interference between differential signal pairs is shielded; in addition, due to the skin effect of the metal in the signal transmission process, the module housing 101 can be approximately regarded as metal after being electroplated and surrounds the differential signal to serve as a differential signal reflux path, so that interference between the differential signal pair is reduced, and the signal reflux path is shortened.
Further, for another embodiment of the present application, on the basis of the above embodiment, a shield mounting groove 105 for mounting a shield is opened on a side of the module case 101 away from the contact terminal of the signal transmission reed 102, and a mounting projection 106 is provided at an end of the side. Providing the shield mounting groove 105 and the mounting projection 106 thereon in this embodiment facilitates the mounting of the shield while facilitating the mounting of the entire signal transmission module.
Reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," "a preferred embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application as broadly described. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is intended that such feature, structure, or characteristic be implemented within the scope of the application.
Although the application has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope and spirit of the principles of this disclosure. More specifically, various variations and modifications may be made to the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, drawings and claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will be apparent to those skilled in the art.

Claims (2)

1. A female end signal transmission module for a high-speed differential signal connector, characterized by: comprises a module shell (101), a signal transmission reed (102) and a plastic package module (103),
a plurality of concave cavities (104) are arranged on the module shell (101), the signal transmission reed (102) is arranged in the concave cavities (104),
a pressing plate (109) is arranged at one side edge of the module shell (101) provided with the concave cavity (104) at intervals, the pressing plate (109) is positioned between the adjacent concave cavities, a square boss (1091) is arranged on the pressing plate, the square boss (1091) has elasticity,
the plastic packaging module (103) covers the concave cavity (104) and seals the concave cavity (104) so that the signal transmission reed (102) forms a sealed signal channel, and a gap is reserved between the plastic packaging module (103) and the pressing plate (109); the plastic package modules (103) are in one-to-one correspondence with the concave cavities (104), the plastic package modules (103) on the adjacent concave cavities (104) are connected into a whole through transverse ribs (107), and the transverse ribs (107) are connected near two end parts of the plastic package modules (103); two transverse ribs (107) at two ends of the plastic package module (103) are arranged in a 90-degree direction, a groove (108) matched with the transverse ribs (107) is formed in the module shell (101), and a gap is formed between the transverse ribs (107) close to the pressing plate (109) and the pressing plate; two signal transmission reeds (102) are formed into a differential pair and are arranged in the same concave cavity104 And the two signal transmission reeds (102) of each differential pair are symmetrically arranged; the concave cavities (104) are distributed according to the differential signal routing paths of the signal transmission reeds (102), and the cavity edges of the concave cavities (104) are spaced from the differential routing edges of the differential signal transmission reeds (102); the difference isSignal signalOne side edge of the housing (101) extends to an adjacent side edge of the module housing (101), and a contact terminal (1021) of the signal transmission reed (102) extends to the outside of the module housing (101); the surfaces of the module cases (101) are covered with plating layers.
2. The female end signal transmission module for a high-speed differential signal connector as recited in claim 1, wherein: a shield mounting groove (105) for mounting a shield is formed in a side of the module housing (101) away from the contact terminal of the signal transmission reed (102), and a mounting projection (106) is formed at an end of the side.
CN201910020963.0A 2019-01-09 2019-01-09 Female end signal transmission module for high-speed differential signal connector Active CN109546476B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910020963.0A CN109546476B (en) 2019-01-09 2019-01-09 Female end signal transmission module for high-speed differential signal connector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910020963.0A CN109546476B (en) 2019-01-09 2019-01-09 Female end signal transmission module for high-speed differential signal connector

Publications (2)

Publication Number Publication Date
CN109546476A CN109546476A (en) 2019-03-29
CN109546476B true CN109546476B (en) 2023-10-10

Family

ID=65834668

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910020963.0A Active CN109546476B (en) 2019-01-09 2019-01-09 Female end signal transmission module for high-speed differential signal connector

Country Status (1)

Country Link
CN (1) CN109546476B (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201397899Y (en) * 2009-03-05 2010-02-03 富士康(昆山)电脑接插件有限公司 Electric connector
CN101872908A (en) * 2010-06-09 2010-10-27 四川华丰企业集团有限公司 High-speed signal connector
JP2011018655A (en) * 2010-09-17 2011-01-27 Amphenol Corp Difference signal electrical connector
CN102570192A (en) * 2012-02-17 2012-07-11 四川华丰企业集团有限公司 Electric connector shielding structure and producing method
CN102969618A (en) * 2012-12-17 2013-03-13 深圳格力浦电子有限公司 Female end plug of high-speed connector
CN103151650A (en) * 2013-03-06 2013-06-12 华为机器有限公司 Signal connector
CN103151649A (en) * 2013-03-22 2013-06-12 四川华丰企业集团有限公司 High-speed signal connector adopting special-shaped shield plate
CN203218617U (en) * 2013-03-22 2013-09-25 四川华丰企业集团有限公司 High-speed signal connector with special-shaped shield plate
CN104022402A (en) * 2013-03-01 2014-09-03 富士康(昆山)电脑接插件有限公司 Electric connector
CN105896189A (en) * 2016-05-26 2016-08-24 胡光才 Differential signal connector

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201397899Y (en) * 2009-03-05 2010-02-03 富士康(昆山)电脑接插件有限公司 Electric connector
CN101872908A (en) * 2010-06-09 2010-10-27 四川华丰企业集团有限公司 High-speed signal connector
JP2011018655A (en) * 2010-09-17 2011-01-27 Amphenol Corp Difference signal electrical connector
CN102570192A (en) * 2012-02-17 2012-07-11 四川华丰企业集团有限公司 Electric connector shielding structure and producing method
CN102969618A (en) * 2012-12-17 2013-03-13 深圳格力浦电子有限公司 Female end plug of high-speed connector
CN104022402A (en) * 2013-03-01 2014-09-03 富士康(昆山)电脑接插件有限公司 Electric connector
CN103151650A (en) * 2013-03-06 2013-06-12 华为机器有限公司 Signal connector
CN103151649A (en) * 2013-03-22 2013-06-12 四川华丰企业集团有限公司 High-speed signal connector adopting special-shaped shield plate
CN203218617U (en) * 2013-03-22 2013-09-25 四川华丰企业集团有限公司 High-speed signal connector with special-shaped shield plate
CN105896189A (en) * 2016-05-26 2016-08-24 胡光才 Differential signal connector

Also Published As

Publication number Publication date
CN109546476A (en) 2019-03-29

Similar Documents

Publication Publication Date Title
CN109411958B (en) High speed interconnect assembly
CN102842784B (en) Power connector and electrical connector assembly and system having the same
US11616328B2 (en) Mating module and cable connector
CN102106041A (en) System and method of surface mount electrical connection
CN110854572B (en) Connector with a locking member
CN108963512B (en) Connector module and manufacturing method thereof
CN109830849B (en) Module structure for high-speed connector and high-speed connector
CN102570116B (en) For the interface contacts of electric connector
TWM517932U (en) High frequency connector continuously grounding to improve crosstalk
CN109546471B (en) Female end signal transmission module with metal shielding plate
CN111370943A (en) Electrical connector
CN109510033B (en) Female connector for high-speed differential signal connector
CN110086026B (en) Electric connector
CN109659770B (en) High-speed differential signal connector with shielding effect
CN109830854B (en) Shielding assembly for high-speed connector, module structure and high-speed connector
CN109546461B (en) Female end signal transmission module with metal shielding plate
CN109546476B (en) Female end signal transmission module for high-speed differential signal connector
CN109546459B (en) Female end signal transmission module with metal shielding plate
CN109546464B (en) High-speed differential signal connector
CN109659771B (en) High-speed differential signal connector with shielding effect
CN109546475B (en) Female end signal transmission module for high-speed differential signal connector
CN109546462B (en) Female end signal transmission module with metal shielding plate
CN109510031B (en) Female connector for high-speed differential signal connector
CN109546468B (en) High-speed differential signal connector
CN109546472B (en) Female end signal transmission module with metal shielding plate

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information

Address after: 621000 No. 36 Yuejin Road, Fucheng District, Sichuan, Mianyang

Applicant after: Sichuan Huafeng Technology Co.,Ltd.

Address before: 621000 No. 36 Yuejin Road, Fucheng District, Sichuan, Mianyang

Applicant before: SICHUAN HUAFENG ENTERPRISE GROUP Co.,Ltd.

CB02 Change of applicant information
GR01 Patent grant
GR01 Patent grant