CN113794485A - 300M wireless radio frequency communication system - Google Patents
300M wireless radio frequency communication system Download PDFInfo
- Publication number
- CN113794485A CN113794485A CN202111021560.1A CN202111021560A CN113794485A CN 113794485 A CN113794485 A CN 113794485A CN 202111021560 A CN202111021560 A CN 202111021560A CN 113794485 A CN113794485 A CN 113794485A
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- fixedly connected
- housing
- wall
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- 238000004891 communication Methods 0.000 title claims abstract description 51
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 230000008054 signal transmission Effects 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 12
- 210000003781 tooth socket Anatomy 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 230000003139 buffering effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Transceivers (AREA)
Abstract
The invention relates to the technical field of communication, and discloses a 300M wireless radio frequency communication system which comprises a system module assembly, wherein the system module assembly comprises a signal detection module, a signal control module, a driving module, a signal collection module and a power supply module, the power supply module is connected with the signal detection module, the signal control module, the driving module and the signal collection module, the signal control module is also connected with a signal transmission module, and the signal collection module is connected with the signal detection module. The auxiliary antenna and the main antenna are matched for use, so that the problem that a communication device is difficult to realize good communication in places with poor signals is avoided, the communication effect of the device is improved, the movable seat is prevented from directly colliding with the guide rail when being reset through the buffer cushion, the buffer effect of the device is improved, a user can conveniently detach and maintain the communicator through the cover plate, and the convenience of the device is improved.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a 300M wireless radio frequency communication system.
Background
With the rapid development of modern electronic technology, more and more communication products emerge, especially new products in the field of wireless communication, and currently, wireless communication methods include radio, infrared, microwave communication, and wireless radio frequency transceiving methods, wherein the wireless radio frequency transceiving apparatus is widely applied to wireless communication devices due to the advantages of low price and long transmission distance.
The wireless radio frequency communication equipment is widely used by people due to the fact that the price is substantial, and the wireless radio frequency communication device commonly used in the market at present generally adopts an antenna to receive transmission signals, however, due to the fact that the receiving range of the antenna is limited, the communication device is difficult to achieve a good communication effect in places with poor signals, and the strength of communication signals cannot be detected, and therefore, the 300M wireless radio frequency communication system is very necessary to be provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a 300M wireless radio frequency communication system, which solves the problems that a communication device is difficult to realize a good communication effect in a place with a poor signal and cannot detect the strength of a communication signal due to the limited receiving range of an antenna.
(II) technical scheme
In order to achieve the purpose, the invention adopts the following technical scheme:
A300M wireless radio frequency communication system comprises a system module assembly, wherein the system module assembly comprises a signal detection module, a signal control module, a driving module, a signal collection module and a power supply module, the power supply module is connected with the signal detection module, the signal control module, the driving module and the signal collection module, the signal control module is also connected with a signal transmission module, the signal collection module is connected with the signal detection module, the signal detection module is connected with the signal control module, the driving module comprises a manual driving module and an electric driving module, a signal shielding module is arranged outside the signal transmission module, the signal transmission module comprises a signal input module and a signal output module,
on the basis of the scheme, the signal input module is connected with the signal filtering module, and the signal output module is connected with the loudspeaker module.
Further, the system module assembly further comprises a communication device, the communication device comprises a shell, a first fixed seat is fixedly connected to the inner wall of one side of the shell, an auxiliary antenna is movably connected in the first fixed seat, one end of the auxiliary antenna penetrates through the shell, a tooth groove is formed in one side of the auxiliary antenna, a limiting strip is fixedly connected to one side of the auxiliary antenna, a clamping groove is formed in the bottom end of the auxiliary antenna, a second fixed seat is fixedly connected to the inner wall of one side of the shell, a connecting shaft is movably connected in the second fixed seat, a gear is fixedly connected to one side of the connecting shaft, one end of the connecting shaft is rotatably connected with the shell, the gear is meshed with the tooth groove, a torsion spring is sleeved on one side of the connecting shaft, two ends of the torsion spring are respectively fixed with the connecting shaft and the second fixed seat, a guide rail is fixedly connected to the inner wall of one side of the shell, and a moving seat is movably connected in the guide rail, the upper surface of the moving seat is provided with a sliding groove, a clamping block is movably connected in the sliding groove and is clamped with the clamping groove, second springs are fixedly connected to the two sides of the clamping block and are fixed with the moving seat, a connecting rod is inserted into the outer wall of one side of the shell, one end of the connecting rod is fixed with the moving seat, a first spring is sleeved on one side of the connecting rod, the two ends of the first spring are fixed with the shell and the moving seat respectively, a cushion pad is fixedly connected to the inner wall of one side of the guide rail and is in contact with the moving seat, a control panel is fixedly connected to the outer wall of one side of the shell, a cover plate is fixedly connected to one side of the shell, and one end of the connecting rod penetrates through the shell and a pull ring fixedly connected with the connecting rod.
As a further scheme of the present invention, the inner wall of one side of the housing is fixedly connected with two fixing ribs, and the fixing ribs are fixed with the second fixing seat.
On the basis of the scheme, the top of the first fixed seat is fixedly connected with a main antenna.
Furthermore, a control module is fixedly connected to the inner wall of one side of the shell.
As a further scheme of the present invention, a plurality of sound transmission holes are formed in one side of the housing, and a speaker is fixedly connected to an inner wall of the bottom of the housing and is in contact with the sound transmission holes.
On the basis of the scheme, the inner wall of one side of the shell is fixedly connected with a storage battery, the outer wall of one side of the shell is provided with a mounting opening, and a charging socket is fixedly connected in the mounting opening.
The invention has the beneficial effects that:
1. according to the invention, the signal is collected by the signal collection module and then transmitted to the signal detection module, when the signal detection module detects that the signal is weak, the signal control module controls the driving module to adjust, then the signal collection module continuously collects the signal and transmits the signal to the signal input module, and the signal input module transmits the signal to the signal output module to output, so that the signal detection module is convenient and quick, and the strength of the signal is ensured.
2. In the invention, the sound transmission holes are formed in the shell, so that the loudspeaker can conveniently emit and receive sound when in work, the communication device can effectively transmit the sound, and the sound transmission effect of the device is improved.
3. According to the invention, by arranging the buffer cushion on the guide rail, the buffer cushion can effectively buffer the moving seat due to the characteristics of the material of the buffer cushion, so that the moving seat is prevented from directly colliding with the guide rail when being reset, and the buffering effect of the device is improved.
4. According to the invention, through the arrangement of the cover plate arranged on the shell, the cover plate can effectively prevent external dust from entering the shell, meanwhile, the communication device is convenient for a user to disassemble and maintain, and the convenience of the device is improved.
5. According to the invention, the auxiliary antenna and the main antenna are used in a matched manner, and the pull ring is pulled to enable the auxiliary antenna to move outwards under the torsion action of the torsion spring, so that the signal of the main antenna is enhanced, the communication device is prevented from difficultly realizing good communication in places with poor signals, and the communication effect of the device is improved.
Drawings
Fig. 1 is a schematic perspective view of a 300M wireless rf communication system according to the present invention;
fig. 2 is a schematic sectional view of a housing of a 300M wireless rf communication system according to the present invention;
fig. 3 is a schematic cross-sectional structural diagram of a guide rail of a 300M wireless radio frequency communication system according to the present invention;
fig. 4 is a schematic diagram of a system module structure of a 300M wireless rf communication system according to the present invention.
In the figure: 1. a control panel; 2. a sound transmission hole; 3. a pull ring; 4. a housing; 5. a cover plate; 6. an auxiliary antenna; 7. a torsion spring; 8. fixing the ribs; 9. a tooth socket; 10. a limiting strip; 11. a guide rail; 12. a cushion pad; 13. a horn; 14. a storage battery; 15. a control module; 16. a charging jack; 17. a main antenna; 18. a gear; 19. a connecting rod; 20. a first spring; 21. a movable seat; 22. a chute; 23. a clamping block; 24. a second spring; 25. a clamping groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. It should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and their meaning in the context of this patent may be understood by those skilled in the art as appropriate.
Referring to fig. 1-4, a 300M wireless radio frequency communication system, a system module assembly, the system module assembly includes a signal detection module, a signal control module, a driving module, a signal collection module, and a power module, and the power module is connected with the signal detection module, the signal control module, the driving module, and the signal collection module, the signal control module is further connected with a signal transmission module, the signal collection module is connected with the signal detection module, the signal detection module is connected with the signal control module, the driving module includes a manual driving module and an electric driving module, a signal shielding module is disposed outside the signal transmission module, the signal transmission module includes a signal input module and a signal output module, the signal is collected by the signal collection module and then transmitted to the signal detection module, when the signal detection module detects weak signal, the signal control module controls the driving module to adjust, then the signal collection module continues to collect signals and transmits the signals to the signal input module, the signal input module transmits the signals to the signal output module to output the signals, the signal input module is connected with the signal filtering module, and the signal output module is connected with the speaker module.
The system module assembly also comprises communication equipment, the communication equipment comprises a shell 4, a first fixed seat is fixed on the inner wall of one side of the shell 4 through a bolt, an auxiliary antenna 6 is connected in the first fixed seat in a sliding manner, one end of the auxiliary antenna 6 penetrates through the shell 4, a tooth socket 9 is arranged on one side of the auxiliary antenna 6, a limit strip 10 is fixed on one side of the auxiliary antenna 6 through a bolt, the limit strip 10 can effectively limit the auxiliary antenna 6 to avoid the auxiliary antenna 6 from rotating, a clamping groove 25 is arranged at the bottom end of the auxiliary antenna 6, a second fixed seat is fixed on the inner wall of one side of the shell 4 through a bolt, a connecting shaft is rotatably connected in the second fixed seat, a gear 18 is fixed on one side of the connecting shaft through a bolt, one end of the connecting shaft is rotatably connected with the shell 4, the gear 18 is meshed with the tooth socket 9, a torsion spring 7 is sleeved on one side of the connecting shaft, and two ends of the torsion spring 7 are respectively fixed with the connecting shaft and the second fixed seat, the auxiliary antenna 6 moves outwards under the torsion action of the torsion spring 7, so that the signal of the main antenna 17 is enhanced, and the problem that the communication device is difficult to realize good communication in places with poor signals is avoided, the inner wall of one side of the shell 4 is fixedly provided with the guide rail 11 through a bolt, the guide rail 11 is internally and slidably connected with the moving seat 21, the upper surface of the moving seat 21 is provided with a chute 22, the chute 22 is internally and slidably connected with a fixture block 23, the fixture block 23 is clamped with a clamping groove 25, the two sides of the fixture block 23 are both fixedly provided with second springs 24 through bolts, the second springs 24 are fixed with the moving seat 21, the second springs 24 can realize the reset clamping of the fixture block 23, the outer wall of one side of the shell 4 is spliced with a connecting rod 19, one end of the connecting rod 19 is fixed with the moving seat 21, one side of the connecting rod 19 is sleeved with a first spring 20, and the two ends of the first spring 20 are respectively fixed with the shell 4 and the moving seat 21, one side inner wall of guide rail 11 has blotter 12 through the bolt fastening, and blotter 12 contacts with removal seat 21, blotter 12 can carry out effectual buffering to removing seat 21 because of the characteristic of its own material, direct collision guide rail 11 when avoiding removing seat 21 and reseing, one side outer wall of casing 4 has control panel 1 through the bolt fastening, there is apron 5 one side of casing 4 through the bolt fastening, apron 5 can effectually prevent that outside dust from getting into inside the casing 4, the maintenance is dismantled to the communicator to the user of also having made things convenient for simultaneously, casing 4 is passed to the one end of connecting rod 19 and has pull ring 3 through the bolt fastening.
The invention is characterized in that two fixing ribs 8 are fixed on the inner wall of one side of a shell 4 through bolts, the fixing ribs 8 are fixed with a second fixing seat, the fixing ribs 8 can effectively increase the stability between the second fixing seat and the shell 4, a main antenna 17 is fixed on the top of the first fixing seat through bolts, a control module 15 is fixed on the inner wall of one side of the shell 4 through bolts, a plurality of sound transmission holes 2 are formed in one side of the shell 4, the sound transmission holes 2 enable a loudspeaker 13 to conveniently emit and receive sound during working, and enable a communication device to effectively transmit sound, the loudspeaker 13 is fixed on the inner wall of the bottom of the shell 4 through bolts, the loudspeaker 13 is in contact with the sound transmission holes 2, a storage battery 14 is fixed on the inner wall of one side of the shell 4 through bolts, a mounting opening is formed in the outer wall of one side of the shell 4, and a charging socket 16 is fixed in the mounting opening through bolts.
The working principle is as follows: the signal is collected by the signal collection module and then transmitted to the signal detection module, when the signal detection module detects that the signal is weak, the signal control module controls the driving module to adjust, then the signal collection module continuously collects the signal and transmits the signal to the signal input module, the signal input module transmits the signal to the signal output module to output, when the signal is weak, the pull ring 3 is firstly pulled to enable the connecting rod 19 to drive the movable seat 21 to move leftwards to a proper position along the guide rail 11, the first spring 20 is contracted by the movement of the movable seat 21, the clamping block 23 is moved and separated from the clamping groove 25 by the movement of the movable seat 21, so that the connecting shaft drives the gear 18 to rotate under the torsion of the torsion spring 7, the gear 18 rotates to enable the auxiliary antenna 6 to move upwards along the first fixed seat to a position where the bottom end of the auxiliary antenna 6 is contacted with the lower end of the first fixed seat, and then the pull ring 3 is loosened, first spring 20 kick-backs and resets messenger's removal seat 21 and resets, thereby reach the purpose of reinforcing signal, when not needing reinforcing signal, press auxiliary antenna 6, make auxiliary antenna 6 along first fixing base downwardly moving to contacting with fixture block 23, fixture block 23 atress and along spout 22 downstream, fixture block 23 removes and makes second spring 24 shrink, when auxiliary antenna 6 removes to the position that draw-in groove 25 flushed with fixture block 23, second spring 24 kick-backs and resets and makes fixture block 23 insert in the draw-in groove 25, auxiliary antenna 6 makes the rotatory connecting axle rotation of driving of gear 18 when along first fixing base downwardly moving, the connecting axle is rotatory to make torsional spring 7 produce torsion.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides a 300M wireless radio frequency communication system, includes system module assembly, its characterized in that, system module assembly includes signal detection module, signal control module, drive module, signal collection module, power module, and power module is connected with signal detection module, signal control module, drive module, signal collection module, signal control module still is connected with signal transmission module, and signal collection module is connected with signal detection module, and signal detection module is connected with signal control module, and drive module includes manual drive module and electronic drive module, and signal transmission module's outside is equipped with signal shielding module, signal transmission module includes signal input module and signal output module.
2. The system of claim 1, wherein the signal input module is connected to a signal filtering module, and the signal output module is connected to a speaker module.
3. The 300M wireless radio frequency communication system according to claim 1, wherein the system module assembly further comprises a communication device, and the communication device comprises a housing (4), a first fixing seat is fixedly connected to one side of the housing (4), an auxiliary antenna (6) is movably connected in the first fixing seat, one end of the auxiliary antenna (6) passes through the housing (4), a tooth socket (9) is formed in one side of the auxiliary antenna (6), a limiting strip (10) is fixedly connected to one side of the auxiliary antenna (6), a clamping groove (25) is formed in the bottom end of the auxiliary antenna (6), a second fixing seat is fixedly connected to one side of the housing (4), a connecting shaft is movably connected in the second fixing seat, a gear (18) is fixedly connected to one side of the connecting shaft, and one end of the connecting shaft is rotatably connected with the housing (4), the gear (18) is meshed with the tooth grooves (9), a torsion spring (7) is sleeved on one side of the connecting shaft, two ends of the torsion spring (7) are respectively fixed with the connecting shaft and the second fixing seat, a guide rail (11) is fixedly connected to the inner wall of one side of the shell (4), a moving seat (21) is movably connected to the inner side of the guide rail (11), a sliding groove (22) is formed in the upper surface of the moving seat (21), a clamping block (23) is movably connected to the inner side of the sliding groove (22) and clamped to the clamping groove (25), second springs (24) are fixedly connected to two sides of the clamping block (23), the second springs (24) are fixed to the moving seat (21), a connecting rod (19) is inserted into the outer wall of one side of the shell (4), one end of the connecting rod (19) is fixed to the moving seat (21), a first spring (20) is sleeved on one side of the connecting rod (19), and the both ends of first spring (20) are fixed mutually with casing (4) and removal seat (21) respectively, one side inner wall fixedly connected with blotter (12) of guide rail (11), and blotter (12) contact with removal seat (21), one side outer wall fixedly connected with control panel (1) of casing (4), one side fixedly connected with apron (5) of casing (4), casing (4) and fixedly connected with pull ring (3) are passed to the one end of connecting rod (19).
4. A 300M wireless radio frequency communication system according to claim 3, wherein two fixing ribs (8) are fixedly connected to an inner wall of one side of the housing (4), and the fixing ribs (8) are fixed to the second fixing base.
5. A 300M wireless radio frequency communication system according to claim 3, wherein a main antenna (17) is fixedly connected to the top of the first fixed base.
6. A300M wireless radio frequency communication system according to claim 4, wherein a control module (15) is fixedly connected to one side inner wall of the housing (4).
7. The 300M wireless radio frequency communication system according to claim 6, wherein a plurality of sound transmission holes (2) are formed in one side of the housing (4), a speaker (13) is fixedly connected to the inner wall of the bottom of the housing (4), and the speaker (13) is in contact with the sound transmission holes (2).
8. A300M wireless radio frequency communication system according to claim 7, wherein a storage battery (14) is fixedly connected to an inner wall of one side of the housing (4), a mounting opening is formed in an outer wall of one side of the housing (4), and a charging socket (16) is fixedly connected in the mounting opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111021560.1A CN113794485A (en) | 2021-09-01 | 2021-09-01 | 300M wireless radio frequency communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111021560.1A CN113794485A (en) | 2021-09-01 | 2021-09-01 | 300M wireless radio frequency communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113794485A true CN113794485A (en) | 2021-12-14 |
Family
ID=78879445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111021560.1A Pending CN113794485A (en) | 2021-09-01 | 2021-09-01 | 300M wireless radio frequency communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113794485A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204680740U (en) * | 2015-05-29 | 2015-09-30 | 天津市搜度科技有限公司 | A kind of portable communications technology bar |
| CN111884730A (en) * | 2020-07-27 | 2020-11-03 | 金桥 | Anti-interference device for wireless communication signal detection |
| CN211908789U (en) * | 2020-05-28 | 2020-11-10 | 福建泉盛电子有限公司 | High-efficient radio transmission intercom |
-
2021
- 2021-09-01 CN CN202111021560.1A patent/CN113794485A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204680740U (en) * | 2015-05-29 | 2015-09-30 | 天津市搜度科技有限公司 | A kind of portable communications technology bar |
| CN211908789U (en) * | 2020-05-28 | 2020-11-10 | 福建泉盛电子有限公司 | High-efficient radio transmission intercom |
| CN111884730A (en) * | 2020-07-27 | 2020-11-03 | 金桥 | Anti-interference device for wireless communication signal detection |
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Address after: Room 714, Building B, Xingzhi Science Park, No. 6, Xingzhi Road, Nanjing Economic and Technological Development Zone, Jiangsu 210046 Applicant after: Nanjing Jinrongde Technology Co.,Ltd. Address before: 210046 room 714, block B, Xingzhi science and Technology Park, No. 6, Xingzhi Road, Nanjing Economic and Technological Development Zone, Jiangsu Province Applicant before: Nanjing jinrongde Information Technology Co.,Ltd. |