CN108303573A - Cubing is connected with circuit check multiposition - Google Patents
Cubing is connected with circuit check multiposition Download PDFInfo
- Publication number
- CN108303573A CN108303573A CN201810006051.3A CN201810006051A CN108303573A CN 108303573 A CN108303573 A CN 108303573A CN 201810006051 A CN201810006051 A CN 201810006051A CN 108303573 A CN108303573 A CN 108303573A
- Authority
- CN
- China
- Prior art keywords
- switch
- probe
- circuit
- cubing
- multiposition
- 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.)
- Pending
Links
- 239000000523 sample Substances 0.000 claims abstract description 38
- 238000012360 testing method Methods 0.000 claims abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 18
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000011230 binding agent Substances 0.000 claims abstract description 14
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000012797 qualification Methods 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
It is a kind of that cubing being connected with circuit check multiposition, it is carried out at the same time detection for many places conductiving point to product, it includes board, the pedestal being installed on board, several probes being installed on pedestal, the support base being installed on board, the positioning cylinder being installed on support base, the binder component being installed on positioning cylinder and the test circuit module for being installed on board and being connect with probe, the binder component are mutually aligned in the vertical direction with pedestal；By the way that test circuit module is arranged, external gas circuit is connect by the solenoid valve on test circuit module with positioning cylinder, probe is detected the conductiving point on product, and the structure of detection is fed back by the warning circuit of test circuit module, it is effectively prevent detection leakage phenomenon, improves the qualification rate of product, simultaneously, all conductiving points on product can be disposably detected with circuit check multiposition conducting cubing, effectively improves product detection efficiency, shorten the production cycle of product.
Description
Technical field
The present invention relates to a kind of detection devices more particularly to a kind of utilization circuit check multiposition, and cubing is connected.
Background technology
Apply to electronic product hardware shell complete surface treatment after, it is desirable that big face is non-conductive, the local small position in many places
Conduction, in order to examine product, whether qualification also needs to carry out conductive test, and traditional detection side to shell using detection device
Formula is detected to hardware shell using universal meter, due to having many places to need to detect on hardware shell, is surveyed using traditional universal meter
Try efficiency it is very low under, and when being detected to different location, reminded without warning device, omission factor is very high.One production
The position to be detected of product is more, and efficiency is lower, and omission factor is higher, and accordingly, there exist serious missing inspection problem and detection efficiency be not high
Defect.
Invention content
Based on this, it is necessary to be directed to deficiency in the prior art, provide and a kind of novel led with circuit check multiposition
Logical cubing.
It is a kind of that cubing being connected with circuit check multiposition, it is carried out at the same time detection for many places conductiving point to product, is wrapped
It includes board, the pedestal that is installed on board, several probes being installed on pedestal, the support base being installed on board, be installed in
Positioning cylinder, the binder component being installed on positioning cylinder on support base and the survey for being installed on board and being connect with probe
Circuit module is tried, the binder component is mutually aligned in the vertical direction with pedestal；
The test circuit module include power supply, single-tap point driving switch, emergency stop switch, time relay T1, solenoid valve,
Several groups warning circuit, control panel, the probe are connected on control panel, and each group of warning circuit is corresponding with a probe, control
Making sheet controls warning circuit according to the measurement result of the probe；
The single-tap point driving switch, grating switch, emergency stop switch, time relay T1, solenoid valve are sequentially connected in series in electricity
Between the positive electrode and negative electrode in source, the time relay T1 is equipped with contact K1 and time regulator, the time relay T1
Contact K1 be parallel on single-tap point driving switch, external gas circuit is connected to by solenoid valve on positioning cylinder；
The warning circuit includes time relay KM, control switch, alarm, indicator light, and time relay KM is in parallel
On time relay T1, the time relay KM is equipped with contact K2 and time regulator, and the regulating switch K3 includes
The control terminal of input terminal, the first output end, second output terminal and control terminal, the regulating switch K3 is connected on control panel, institute
The both ends for stating the contact K2 of time relay KM are connected on the input terminal of positive pole, regulating switch K3, regulating switch
The first output end of K3 is connected to by alarm on the cathode of power supply, and the second output terminal of regulating switch K3 is connected by indicator light
It is connected on the cathode of power supply, the control switch K3 changes connected state, keep input terminal defeated with first according to the information of control terminal
Outlet or second output terminal connection.
Further, the test circuit module further includes grating switch, and the grating switch is connected on single contact startup
Further include one or more grating with circuit check multiposition conducting cubing, the grating is connected to control on switch
In making sheet, testing result is fed back to control panel by the grating, when detecting that foreign matter is extend into the stroke of positioning cylinder,
Control panel controls grating switch and disconnects.
Further, the support base is arranged in door shape, and support base includes crossbeam and is connected and fixed on crossbeam both sides
Several montants, the montant bottom are fixed to each other with board；The binder component includes below guide plate and connecting guide plate
Pressing plate, the positioning cylinder are installed on crossbeam, and the telescopic rod on cylinder of transposing passes through crossbeam and connect with guide plate.
Further, the guide plate both ends are equipped with pilot hole, and the montant passes through pilot hole, positioning cylinder band dynamic pressure
Expect component pushing or upper lift, in moving process, guide plate is moved along the extending direction of montant.
Further, the upper end of the probe reaches the outside of pedestal, is equipped with return spring in the middle part of probe, is visited when pushing
When needle, the top and bottom circuit turn-on of probe, when return spring is in extended configuration, the top and bottom circuit of probe is disconnected
It opens.
The beneficial effects of the present invention are：By the way that test circuit module is arranged, external gas circuit passes through on test circuit module
Solenoid valve KV with positioning cylinder connect, probe is detected the conductiving point on product, and by the warning of test circuit module
Circuit feeds back the structure of detection, effectively prevent detection leakage phenomenon, improves the qualification rate of product, meanwhile, with circuit check
Multiposition conducting cubing can disposably be detected all conductiving points on product, effectively improve product detection efficiency, contract
It is the production cycle of short sawn timber, highly practical, there is stronger dissemination.
Description of the drawings
Fig. 1 is the structural schematic diagram that cubing is connected with circuit check multiposition by the present invention.
Fig. 2 is the structural schematic diagram of pedestal with board the cooperation installation of cubing shown in Fig. 1.
Fig. 3 is the circuit diagram for the test circuit module that cubing is connected with circuit check multiposition by the present invention.
Specific implementation mode
In order to make the object, technical solution and advantage of invention be more clearly understood, with reference to the accompanying drawings and embodiments, to hair
It is bright to be further elaborated.It should be appreciated that specific embodiment described herein is not used to limit only to explain invention
Fixed invention.
As shown in Figure 1 to Figure 3, the present invention provides a kind of with circuit check multiposition conducting cubing, for product 100
Many places conductiving point be carried out at the same time detection, this with circuit detection multiposition conducting cubing include board 10, be installed in board 10
On pedestal 50, be installed on pedestal 50 several probes 110, be installed on board 10 support base 20, be installed in support base
It positioning cylinder 30 on 20, the binder component 40 being installed on positioning cylinder 30 and is installed on board 10 and connects with probe 110
The test circuit module (not shown) connect, the binder component 40 are mutually aligned in the vertical direction with pedestal 50.
The upper end of the probe 110 reaches the outside of pedestal 50, and 110 middle part of probe is fixed with pedestal 50, probe 110
Bottom end reaches the lower section of bottom and is connect with test circuit module, and 110 middle part of probe is equipped with return spring, when pushing probe 110
When return spring being made to be compressed to certain position, the top and bottom circuit turn-on of probe 110, when return spring is in extended configuration
When, the top and bottom circuit of probe 110 disconnects, and the position of probe 110 and the conductiving point one of product 100 not existed together are a pair of
It answers.
The support base 20 is arranged in door shape, if support base 20 is including crossbeam 21 and is connected and fixed on 21 both sides of crossbeam
Dry montant 22,22 bottom of the montant are fixed to each other with board 10.The binder component 40 includes that guide plate 41 and connection are oriented to
The pressing plate 42 of 41 lower section of plate, 41 both ends of the guide plate are equipped with pilot hole (figure is not marked), and the montant 22 passes through pilot hole, institute
It states positioning cylinder 30 to be installed on crossbeam 21, the telescopic rod on cylinder 30 of transposing passes through crossbeam 21 and connect with guide plate 41, adjusts
Position cylinder 30 drives 40 pushing of binder component or upper lift, and in moving process, guide plate 41 can only be along the extension side of montant 42
To movement.
The test circuit module includes power supply, single-tap point driving switch 91, grating switch 92, emergency stop switch 93, time
Relay T1, solenoid valve KV, several groups warning circuit (figure is not marked), control panel (figure is not marked), the probe 110 is connected to control
On plate, each group of warning circuit is corresponding with a probe 110, and control panel controls warning electricity according to the measurement result of the probe 110
Road.
The single-tap point driving switch 91, grating switch 92, emergency stop switch 93, time relay T1, solenoid valve KV are successively
Be connected between the positive electrode and negative electrode of power supply, the time relay T1 be equipped with contact K1 and time regulator 94, the time after
Electric appliance 94 it is electric after, contact K1 is within a certain period of time in conducting state, when wherein time regulator 94 regulates and controls the closure of contact K1
Between.The contact K1's of the time relay T1 is parallel on single-tap point driving switch 91.External gas circuit is connected by solenoid valve KV
It is connected on positioning cylinder 30, solenoid valve changes state, changes the flow direction of gas circuit, the mandril of positioning cylinder 30 is made to support forwardly
Or the state to after-contraction.
Warning circuit described in each group includes time relay KM, control switch 93, alarm 80, indicator light 70.Time
Relay KM is connected in parallel on time relay T1, and the time relay KM is equipped with contact K2 and time regulator 95, time
Relay KM obtain it is electric after, contact K2 is within a certain period of time in conducting state, and wherein time regulator 92 regulates and controls the closure of contact K2
Time.The regulating switch K3 includes input terminal, the first output end, second output terminal and control terminal, the regulating switch K3's
Control terminal is connected on control panel, and the both ends of the contact K2 of the time relay KM are connected to positive pole, regulation and control are opened
On the input terminal for closing K3, the first output end of regulating switch K3 is connected to by alarm 80 on the cathode of power supply, regulating switch
The second output terminal of K3 is connected to by indicator light 70 on the cathode of power supply, described to control information of the switch K3 according to control terminal,
Change connected state, input terminal is made to be connect with the first output end or second output terminal.In the present embodiment, the warning circuit of difference group
Share an alarm 80.
The invention also includes one or more grating 60, the grating 60 is connected on control panel, the grating
60 are used as a kind of safety guard, for detecting whether there is foreign matter to extend into the stroke of positioning cylinder 30, the grating 60
Testing result is fed back into control panel, when detecting that foreign matter is extend into the stroke of positioning cylinder 30, control panel controls light
Grid switch 92 disconnects.
When work, grating switch 92 and emergency stop switch 93 are in normally off, and product 100 is put into pedestal 50, carry out
Single-tap point driving switch 10 (when release, the meeting return of single-tap point driving switch 10 is at off-state) is pressed in positioning, when
Between relay KM, time relay T1 obtain electric, the normally opened contact K1 of time relay T1 is closed, and the normally opened of time relay KM touches
When point K2 is closed, solenoid valve KV is powered, and the gas circuit of solenoid valve KV controls changes the mandril so that cylinder 20 of transposing in mechanical mechanism
It pushes.
Positioning cylinder 301, which pushes, drives binder component 40 to be pressed down against probe 110 simultaneously with the pressing of product 100, such as Tab phenolphthaleinum
Electric dot circuit conducting, the input terminal of control switch K3 are connect with the first output end, and indicator light 70 is bright；If conductiving point access failure, control
The input terminal of system switch K3 is connect with second output terminal, and alarm 80 is alarmed, to detect whether conductive bit has processing in place.
Wait for that (by 94 setting time of time regulator, usual this period continues 3 to the arrival of time relay T1 setting times
~4s), then the contact K1 of time relay T1 is disconnected, and circuit 10 disconnects, solenoid valve KV dead electricity, and positioning 30 gas circuit of cylinder returns just
The mandril of beginning state, positioning cylinder 30 also playbacks therewith.Product taking-up will have been surveyed.
During the work time, when grating 12 recognizes interference signal, grating switch 93 disconnects in circuit, and circuit loop is disconnected
Open, solenoid valve KV dead electricity, control gas circuit returns original state, and the mandril of positioning cylinder 30 lifts, avoid causing personnel injure or
Device damages.
The beneficial effects of the present invention are：By the way that test circuit module is arranged, external gas circuit passes through on test circuit module
Solenoid valve KV with positioning cylinder 30 connect, probe 110 is detected the conductiving point on product 100, and by test circuit mould
The warning circuit of group feeds back the structure of detection, effectively prevent detection leakage phenomenon, improves the qualification rate of product 100, meanwhile, fortune
All conductiving points on product 100 can be disposably detected with circuit check multiposition conducting cubing, effectively improves production
100 detection efficiency of product shortens the production cycle of product 100, highly practical, has stronger dissemination.
A kind of embodiment invented above described embodiment only expresses, the description thereof is more specific and detailed, but not
It can therefore be construed as limiting the scope of the patent.It should be pointed out that for those of ordinary skill in the art,
Under the premise of not departing from inventive concept, various modifications and improvements can be made, these belong to the protection domain of invention.Cause
This, the protection domain of patent of invention should be determined by the appended claims.
Claims (5)
1. a kind of being connected cubing with circuit check multiposition, it is carried out at the same time detection for many places conductiving point to product, it is special
Sign is, including board, the pedestal being installed on board, several probes being installed on pedestal, the support that is installed on board
Seat, be installed on support base positioning cylinder, be installed in positioning cylinder on binder component and be installed on board simultaneously and probe
The test circuit module of connection, the binder component are mutually aligned in the vertical direction with pedestal；
The test circuit module includes power supply, single-tap point driving switch, emergency stop switch, time relay T1, solenoid valve, several
Group warning circuit, control panel, the probe are connected on control panel, and each group of warning circuit is corresponding with a probe, control panel
Warning circuit is controlled according to the measurement result of the probe；
The single-tap point driving switch, grating switch, emergency stop switch, time relay T1, solenoid valve are sequentially connected in series in power supply
Between positive electrode and negative electrode, the time relay T1 is equipped with contact K1 and time regulator, and the time relay T1's touches
Point K1's is parallel on single-tap point driving switch, and external gas circuit is connected to by solenoid valve on positioning cylinder；
The warning circuit includes time relay KM, control switch, alarm, indicator light, when time relay KM is connected in parallel on
Between on relay T1, the time relay KM is equipped with contact K2 and time regulator, and the regulating switch K3 includes input
End, the first output end, second output terminal and control terminal, the control terminal of the regulating switch K3 is connected on control panel, when described
Between the both ends of contact K2 of relay KM be connected on the input terminal of positive pole, regulating switch K3, regulating switch K3's
First output end is connected to by alarm on the cathode of power supply, and the second output terminal of regulating switch K3 is connected to by indicator light
On the cathode of power supply, the control switch K3 changes connected state, makes input terminal and the first output end according to the information of control terminal
Or second output terminal connection.
2. cubing is connected with circuit check multiposition as described in claim 1, it is characterised in that：The test circuit module
Further include grating switch, the grating switch is connected on single-tap point driving switch, and cubing is connected with circuit check multiposition
Further include one or more grating, the grating is connected on control panel, and testing result is fed back to control by the grating
Making sheet, when detecting that foreign matter is extend into the stroke of positioning cylinder, control panel controls grating switch and disconnects.
3. cubing is connected with circuit check multiposition as described in claim 1, it is characterised in that：The support base is in door word
Shape is arranged, and support base includes crossbeam and is connected and fixed on several montants of crossbeam both sides, and the montant bottom and board are mutually solid
It is fixed；The binder component includes the pressing plate below guide plate and connecting guide plate, and the positioning cylinder is installed on crossbeam, positioning
Telescopic rod on cylinder passes through crossbeam and is connect with guide plate.
4. cubing is connected with circuit check multiposition as claimed in claim 3, it is characterised in that：The guide plate both ends are equal
Equipped with pilot hole, the montant passes through pilot hole, and positioning cylinder drives the pushing of binder component or upper lift, in moving process,
Guide plate is moved along the extending direction of montant.
5. cubing is connected with circuit check multiposition as described in claim 1, it is characterised in that：It stretches the upper end of the probe
Go out the outside to pedestal, return spring is equipped in the middle part of probe, when pushing probe, the top and bottom circuit turn-on of probe, when
When return spring is in extended configuration, the top and bottom circuit of probe disconnects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810006051.3A CN108303573A (en) | 2018-01-03 | 2018-01-03 | Cubing is connected with circuit check multiposition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810006051.3A CN108303573A (en) | 2018-01-03 | 2018-01-03 | Cubing is connected with circuit check multiposition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108303573A true CN108303573A (en) | 2018-07-20 |
Family
ID=62868092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810006051.3A Pending CN108303573A (en) | 2018-01-03 | 2018-01-03 | Cubing is connected with circuit check multiposition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108303573A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2582196Y (en) * | 2002-11-27 | 2003-10-22 | 上达科技股份有限公司 | Improvement of electromagnetic interference prevention probe structure |
| CN201421489Y (en) * | 2009-06-08 | 2010-03-10 | 王云阶 | Electron and circuit board micrometering detection device |
| CN201514424U (en) * | 2009-07-09 | 2010-06-23 | 安拓锐高新测试技术（苏州）有限公司 | Spring probe (3) for testing semiconductor chip |
| CN201780334U (en) * | 2010-08-09 | 2011-03-30 | 深南电路有限公司 | Impedance test probe |
| CN103513156A (en) * | 2013-10-21 | 2014-01-15 | 无锡忻润汽车安全系统有限公司 | Detecting device for wiring board and wiring harness of automobile |
| CN203535162U (en) * | 2013-11-20 | 2014-04-09 | 威科电子模块（深圳）有限公司 | Continuity tester for plated-through hole of thick film hybrid integrated circuit module |
| CN103984286A (en) * | 2014-05-30 | 2014-08-13 | 昆山银丰塑胶电子有限公司 | Control method of automatic pressing machine tool |
| CN203870189U (en) * | 2014-04-30 | 2014-10-08 | 慈溪市信跃电器有限公司 | Work platform for detecting conduction and insulation of metallic insert in plastic component |
| CN205651028U (en) * | 2016-05-20 | 2016-10-19 | 苏州通又盛电子科技有限公司 | Accurate intelligent servo pressure equipment machine |
| CN206430656U (en) * | 2017-01-20 | 2017-08-22 | 太仓华夏精密机械有限公司 | A kind of full-automatic cubing |
| CN207764267U (en) * | 2018-01-03 | 2018-08-24 | 广东东方亮彩精密技术有限公司 | Cubing is connected with circuit check multiposition |
-
2018
- 2018-01-03 CN CN201810006051.3A patent/CN108303573A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2582196Y (en) * | 2002-11-27 | 2003-10-22 | 上达科技股份有限公司 | Improvement of electromagnetic interference prevention probe structure |
| CN201421489Y (en) * | 2009-06-08 | 2010-03-10 | 王云阶 | Electron and circuit board micrometering detection device |
| CN201514424U (en) * | 2009-07-09 | 2010-06-23 | 安拓锐高新测试技术（苏州）有限公司 | Spring probe (3) for testing semiconductor chip |
| CN201780334U (en) * | 2010-08-09 | 2011-03-30 | 深南电路有限公司 | Impedance test probe |
| CN103513156A (en) * | 2013-10-21 | 2014-01-15 | 无锡忻润汽车安全系统有限公司 | Detecting device for wiring board and wiring harness of automobile |
| CN203535162U (en) * | 2013-11-20 | 2014-04-09 | 威科电子模块（深圳）有限公司 | Continuity tester for plated-through hole of thick film hybrid integrated circuit module |
| CN203870189U (en) * | 2014-04-30 | 2014-10-08 | 慈溪市信跃电器有限公司 | Work platform for detecting conduction and insulation of metallic insert in plastic component |
| CN103984286A (en) * | 2014-05-30 | 2014-08-13 | 昆山银丰塑胶电子有限公司 | Control method of automatic pressing machine tool |
| CN205651028U (en) * | 2016-05-20 | 2016-10-19 | 苏州通又盛电子科技有限公司 | Accurate intelligent servo pressure equipment machine |
| CN206430656U (en) * | 2017-01-20 | 2017-08-22 | 太仓华夏精密机械有限公司 | A kind of full-automatic cubing |
| CN207764267U (en) * | 2018-01-03 | 2018-08-24 | 广东东方亮彩精密技术有限公司 | Cubing is connected with circuit check multiposition |
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Address after: 523000 High-tech Industrial Park No. 1, Hengli Town, Dongguan City, Guangdong Province Applicant after: LEI YI CHI TECHNOLOGY (DONGGUAN) CO., LTD. Address before: 523000 High-tech Industrial Park No. 1, Hengli Town, Dongguan City, Guangdong Province Applicant before: GUANGDONG DONGFANG LIANGCAI PRECISION TECHNOLOGY CO., LTD. |