CN114235863A - Horizontal supporting table for circuit board illumination detection - Google Patents
Horizontal supporting table for circuit board illumination detection Download PDFInfo
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- CN114235863A CN114235863A CN202111468130.4A CN202111468130A CN114235863A CN 114235863 A CN114235863 A CN 114235863A CN 202111468130 A CN202111468130 A CN 202111468130A CN 114235863 A CN114235863 A CN 114235863A
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- hinge joint
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- 238000001514 detection method Methods 0.000 title claims abstract description 38
- 238000005286 illumination Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 241000309551 Arthraxon hispidus Species 0.000 claims 1
- 208000032836 Ring chromosome 15 syndrome Diseases 0.000 description 6
- 208000032837 Ring chromosome 16 syndrome Diseases 0.000 description 6
- 208000035212 Ring chromosome 19 syndrome Diseases 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
- G01N23/18—Investigating the presence of flaws defects or foreign matter
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention provides a horizontal supporting table for circuit board illumination detection, and relates to the field of circuit board detection. This horizontal supporting platform for circuit board illumination detection, including the fixed station, both sides fixed mounting has fixed cross beam around the upper surface of fixed station, and fixed cross beam's bottom one side fixed mounting has the laser emission head, and fixed cross beam bottom opposite side fixed mounting has the reflected light detection board, and the upper surface of fixed station is located fixed mounting between two fixed cross beams and has the telescope tube. This horizontal supporting bench is used in circuit board illumination detection, through two parallel light that send by laser emission head on the circuit board reflection light detection board, the arrival time difference through two light around the contrast can controlling means compensation circuit board inclination difference around, the difference that can drive arrangement compensation circuit board slope about the position through contrast light reflection point, the problem of the detection error that the circuit board is out of level and leads to among the prior art has been solved.
Description
Technical Field
The invention relates to the technical field of circuit board detection, in particular to a horizontal support platform for circuit board illumination detection.
Background
The circuit board illumination detection method utilizes the difference of different substances on the absorption rate of X-rays to see through the part needing to be detected and find defects. The method is mainly used for detecting defects of the superfine-spacing and ultrahigh-density circuit board, bridging, missing, poor alignment and the like generated in the assembling process, and can also be used for detecting internal defects of the IC chip by utilizing the tomography technology. Side-looking X-rays may even give 3D detection information. Its main advantages are high quality of BGA welding, no need of fixture, and no need of embedded elements.
The X-ray irradiation imaging needs to ensure that the circuit board is kept horizontal, the detection value is changed when the circuit board is slightly inclined, and the support table capable of adjusting and keeping the circuit board horizontal is needed because the processing center of gravity of the circuit board is not at the central point.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a horizontal support table for detecting the illumination of a circuit board, which solves the problems in the prior art.
In order to achieve the purpose, the invention is realized by the following technical scheme: a horizontal supporting platform for circuit board illumination detection comprises a fixed platform, wherein fixed cross beams are fixedly arranged on the front side and the rear side of the upper surface of the fixed platform, a laser emitter is fixedly arranged on one side of the bottom end of each fixed cross beam, a reflected light ray detection plate is fixedly arranged on the other side of the bottom end of each fixed cross beam, a telescopic sleeve is fixedly arranged between the two fixed cross beams on the upper surface of the fixed platform, the output end of the telescopic sleeve is rotatably connected with a roller, a water tank is fixedly arranged on the upper surface of the fixed platform between the telescopic sleeve and the fixed cross beams, an extension rod is slidably connected in the middle of the top end of the water tank, the bottom end of the extension rod is arranged in the water tank, a buoy is fixedly arranged at the bottom end of the extension rod, a hinge joint is fixedly arranged at the top end of the extension rod, a hinge block is rotatably connected in the middle of the hinge joint and extends to the outer side of the hinge joint, and an adhesive disc is fixedly arranged at the top end of the hinge joint, the outer surface of the extension rod is fixedly provided with a main magnetic plate, the upper surface of the water tank is fixedly provided with a limiting sleeve, the main magnetic plate is sleeved inside the limiting sleeve, the inner bottom wall of the limiting sleeve is fixedly provided with a main electromagnetic ring, the main electromagnetic ring is positioned below the main magnetic plate, one end of the hinge block positioned outside the hinge joint is sleeved with a limiting half ring, the outer surface of the hinge block is fixedly provided with a stop dog, the limiting half ring is fixedly connected with the hinge joint, one end of the hinge block positioned outside the hinge joint is internally provided with a stepped hole penetrating through the limiting half ring and the hinge block, the outer surface of the limiting half ring is fixedly provided with a fixed sleeve, the inner bottom wall of the limiting sleeve is fixedly provided with an auxiliary magnetic ring, the inner part of the fixed sleeve is connected with a sliding rod in a sliding manner, the outer surface of the sliding rod is sleeved with an auxiliary magnetic plate, the auxiliary magnetic plate is positioned above the auxiliary magnetic ring, the top end of the sliding rod is hinged with a swinging rod, and the swinging rod is sleeved inside the stepped hole, the top end of the swinging rod is fixedly provided with a clamping disc, and the clamping disc is inserted in the stepped hole.
Preferably, the fixed sleeve is internally provided with a sleeve which is sleeved on the outer surface of the hinged part of the sliding rod and the swinging rod, and the sleeve is fixedly connected with the fixed sleeve through a connecting plate.
Preferably, the two sides of the notch of the limiting half ring are fixedly provided with magnet blocks, and the size of each magnet block is matched with the shape of the stop block.
Preferably, the diameter of the large end of the stepped hole is larger than that of the clamping disc, the diameter of the clamping disc is equal to that of the middle end of the stepped hole, and the diameter of the swing rod is smaller than that of the small end of the stepped hole.
Preferably, the distances from the middle points of the laser emitting heads and the reflected light ray detection plate to the middle point of the fixed cross beam are the same, and the front laser emitting heads and the rear laser emitting heads and the reflected light ray detection plate are symmetrically arranged in front and at the back.
Preferably, when the roller is located at the lowest position, the upper tangent plane of the roller is located below the adhesive disc, the number of the telescopic sleeves is four, and the four telescopic sleeves are distributed in an array mode.
The invention has the following beneficial effects:
1. this horizontal supporting bench is used in circuit board illumination detection, through two parallel light that send by laser emission head on the circuit board reflection light detection board, the arrival time difference through two light around the contrast can controlling means compensation circuit board inclination difference around, the difference that can drive arrangement compensation circuit board slope about the position through contrast light reflection point, the problem of the detection error that the circuit board is out of level and leads to among the prior art has been solved.
2. This horizontal supporting platform is used in circuit board illumination detection, the breach department both sides fixed mounting of spacing semi-ring has the magnet piece, and the size of magnet piece and the shape adaptation of dog can guarantee through such setting that the dog can keep fixed when two extreme position.
3. This horizontal supporting platform for circuit board illumination detection can make the swinging arms take place the swing through control slide bar and then change the position of slide bar to can make the articulated joint take place to deflect in appointed angle, and then can the effect that the invariable angle of control circuit board takes place to deflect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a half-section of a connecting portion of a water tank according to the present invention;
FIG. 3 is a schematic cross-sectional view of a connecting portion of a water tank according to the present invention;
FIG. 4 is an enlarged view taken at A in FIG. 3 according to the present invention;
FIG. 5 is a schematic view of the internal structure of the fixing sleeve of the present invention;
FIG. 6 is a schematic view of the inside of the stepped hole of the present invention.
The device comprises a fixed table-1, a fixed beam-2, a laser emitting head-3, a reflected light detection plate-4, a telescopic sleeve-5, a roller-6, a water tank-7, an extension rod-8, a buoy-9, a hinge head-10, a hinge block-11, an adhesive disc-12, a main magnetic plate-13, a limiting sleeve-14, a main electromagnetic ring-15, a limiting half ring-16, a stepped hole-17, a fixing sleeve-18, an auxiliary magnetic ring-19, a sliding rod-20, an auxiliary magnetic plate-21, a swing rod-22, a clamping disc-23, a sleeve-24, a connecting plate-25 and a stopper-26.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a horizontal support platform for circuit board illumination detection, which comprises:
embodiment one, as shown in fig. 1-6, including fixed station 1, both sides fixed mounting has fixed beam 2 around the upper surface of fixed station 1, fixed beam 2's bottom one side fixed mounting has laser emission head 3, fixed beam 2's bottom opposite side fixed mounting has reflected light detecting plate 4, the distance that the mid point of laser emission head 3 and reflected light detecting plate 4 reaches fixed beam 2 mid point is the same, front and back laser emission head 3 and reflected light detecting plate 4 front and back symmetry set up, can guarantee through such setting that the laser that two laser emission heads 3 sent is parallel.
The upper surface of fixed station 1 is located fixed mounting between two fixed cross beams 2 and has telescopic sleeve 5, telescopic sleeve 5's output is rotated and is connected with gyro wheel 6, gyro wheel 6 is located the below that gluing dish 12 was located to last tangent plane of gyro wheel 6 when the below, telescopic sleeve 5's quantity is four, four telescopic sleeve 5 array distributions, can make through such setting up at the in-process gyro wheel 6 and the circuit board contactless of detection, can promote the circuit board through the promotion after finishing detecting simultaneously and push away the circuit board through rolling.
The upper surface of the fixed platform 1 between the telescopic sleeve 5 and the fixed cross beam 2 is fixedly provided with a water tank 7, the middle part of the top end of the water tank 7 is slidably connected with an extension rod 8, the bottom end of the extension rod 8 is positioned in the water tank 7, the bottom end of the extension rod 8 is fixedly provided with a buoy 9, the top end of the extension rod 8 is fixedly provided with a hinge joint 10, the middle part of the hinge joint 10 is rotatably connected with a hinge block 11, the hinge block 11 extends to the outer side of the hinge joint 10, the top end of the hinge joint 10 is fixedly provided with an adhesive disc 12, the outer surface of the extension rod 8 is fixedly provided with a main magnetic plate 13, the upper surface of the water tank 7 is fixedly provided with a limit sleeve 14, the main magnetic plate 13 is sleeved in the limit sleeve 14, the inner bottom wall of the limit sleeve 14 is fixedly provided with a main electromagnetic ring 15, the main electromagnetic ring 15 is positioned below the main magnetic plate 13, one end of the hinge block 11, which is positioned outside the hinge joint 10, is sleeved with a limit semi-ring 16, the outer surface of the hinge block 11 is fixedly provided with a stop 26, the magnet blocks are fixedly mounted on two sides of the notch of the position-limiting half ring 16, the size of each magnet block is matched with the shape of the stop block 26, and the stop block 26 can be kept fixed at two limit positions through the arrangement.
The outer surface of the sliding rod 20 is sleeved with an auxiliary magnetic plate 21, the auxiliary magnetic plate 21 is positioned above the auxiliary magnetic ring 19, the top end of the sliding rod 20 is hinged with a swinging rod 22, the swinging rod 22 is sleeved inside the stepped hole 17, the top end of the swinging rod 22 is fixedly provided with a clamping disc 23, and the clamping disc 23 is inserted inside the stepped hole 17. The diameter of shoulder hole 17 main aspects is greater than the diameter of joint disc 23, and the diameter of joint disc 23 equals the diameter of shoulder hole 17 middle part, and the diameter of swinging arms 22 is less than shoulder hole 17 tip diameter, can guarantee through such setting that joint disc 23 can carry on spacingly to hinge 10, and when joint disc 23 was by jack-up, hinge 10 can rotate.
When the device is used, the circuit board is placed above the fixed table 1 and is supported by the adhesive disc 12 and the extension rod 8, the center of gravity of the circuit board is not in the middle, so that the compression degree of the independent extension rod 8 is different, the buoy 9 can be pressed into the water surface in the water tank 7, the two laser emission heads 3 are started to emit light, reflected light signals can be reflected to the reflected light detection plate 4 through the circuit board, two signals can be generated when the reflected light signals are reflected to the reflected light detection plate 4, the first reflection time and the second reflection position can be calculated through the reflection time difference of the front light and the second light, the front-back inclined angle of the circuit board can be calculated and converted into electric signals to drive the main electromagnetic ring 15 to work, the front-back balance can be realized through changing the electrification amount of the main electromagnetic ring 15, the position difference of the middle point of the reflected light detection plate 4 through detecting light can be converted into electric signals to drive the main electromagnetic ring 15 to work, thereby keeping the circuit board horizontal;
after horizontal angle finishes shining, the vice magnetic ring 19 of start one side can make vice magnetic sheet 21 rebound, and then can drive slide bar 20 rebound, thereby make swinging arms 22 and 20 pin joint of slide bar leave from sleeve 24, clamping disc 23 can follow rebound in shoulder hole 17 simultaneously, and then can make swinging arms 22 swing, thereby can cancel the spacing to hinge 10, hinge 10 takes place to deflect under the effect of magnet piece, the fixed angle deflection takes place for the circuit board, shine the detection once more, after the detection finishes, the opposite circular telegram of vice magnetic ring 19 attracts swinging arms 22 to reset, and then can make hinge 10 reset, start telescope tube 5 can make gyro wheel 6 rebound, and then hold up the circuit board, extension rod 8 resets under the effect of buoyancy is received at flotation pontoon 9.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a circuit board illumination detects uses horizontal supporting bench, includes fixed station (1), its characterized in that: the front side and the rear side of the upper surface of the fixed table (1) are fixedly provided with fixed beams (2), one side of the bottom end of each fixed beam (2) is fixedly provided with a laser emitting head (3), the other side of the bottom end of each fixed beam (2) is fixedly provided with a reflected light ray detection plate (4), the upper surface of the fixed table (1) is positioned between the two fixed beams (2) and is fixedly provided with a telescopic sleeve (5), and the output end of each telescopic sleeve (5) is rotatably connected with a roller (6);
the water tank (7) is fixedly arranged on the upper surface of the fixed platform (1) located between the telescopic sleeve (5) and the fixed cross beam (2), an extension rod (8) is connected to the middle of the top end of the water tank (7) in a sliding mode, the bottom end of the extension rod (8) is located inside the water tank (7), a buoy (9) is fixedly arranged at the bottom end of the extension rod (8), a hinge joint (10) is fixedly arranged at the top end of the extension rod (8), a hinge block (11) is rotatably connected to the middle of the hinge joint (10), the hinge block (11) extends to the outer side of the hinge joint (10), and an adhesive disc (12) is fixedly arranged at the top end of the hinge joint (10);
the outer surface of the extension rod (8) is fixedly provided with a main magnetic plate (13), the upper surface of the water tank (7) is fixedly provided with a limiting sleeve (14), the main magnetic plate (13) is sleeved inside the limiting sleeve (14), the inner bottom wall of the limiting sleeve (14) is fixedly provided with a main electromagnetic ring (15), and the main electromagnetic ring (15) is positioned below the main magnetic plate (13);
the hinge joint is characterized in that one end of the hinge joint block (11) located on the outer side of the hinge joint (10) is sleeved with a limit half ring (16), a stop block (26) is fixedly installed on the outer surface of the hinge joint block (11), the limit half ring (16) is fixedly connected with the hinge joint (10), a stepped hole (17) penetrating through the limit half ring (16) and the hinge joint block (11) is formed in one end of the hinge joint block (11) located on the outer side of the hinge joint head (10), a fixed sleeve (18) is fixedly installed on the outer surface of the limit half ring (16), an auxiliary magnetic ring (19) is fixedly installed on the inner bottom wall of the fixed sleeve (18), a sliding rod (20) is slidably connected inside the fixed sleeve (18), an auxiliary magnetic plate (21) is sleeved on the outer surface of the sliding rod (20), the auxiliary magnetic plate (21) is located above the auxiliary magnetic ring (19), a swing rod (22) is hinged to the top end of the sliding rod (20), and the swing rod (22) is sleeved inside the stepped hole (17), the top end of the swinging rod (22) is fixedly provided with a clamping disc (23), and the clamping disc (23) is inserted in the stepped hole (17).
2. The horizontal support table for circuit board illumination detection according to claim 1, wherein: the inner part of the fixed sleeve (18) is provided with a sleeve (24), the sleeve (24) is sleeved on the outer surface of the hinged part of the sliding rod (20) and the swinging rod (22), and the sleeve (24) is fixedly connected with the fixed sleeve (18) through a connecting plate (25).
3. The horizontal support table for circuit board illumination detection according to claim 1, wherein: magnet blocks are fixedly mounted on two sides of the notch of the limiting half ring (16), and the size of each magnet block is matched with the shape of the stop block (26).
4. The horizontal support table for circuit board illumination detection according to claim 1, wherein: the diameter of the large end of the stepped hole (17) is larger than that of the clamping disc (23), the diameter of the clamping disc (23) is equal to that of the middle end of the stepped hole (17), and the diameter of the swing rod (22) is smaller than that of the small end of the stepped hole (17).
5. The horizontal support table for circuit board illumination detection according to claim 1, wherein: the distances from the middle points of the laser emitting heads (3) and the reflected light ray detection plate (4) to the middle point of the fixed cross beam (2) are the same, and the front laser emitting heads (3) and the rear laser emitting heads (4) are symmetrically arranged in the front-back direction.
6. The horizontal support table for circuit board illumination detection according to claim 1, wherein: when the roller (6) is located at the lowest part, the upper tangent plane of the roller (6) is located below the adhesive disc (12), the number of the telescopic sleeves (5) is four, and the four telescopic sleeves (5) are distributed in an array mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111468130.4A CN114235863B (en) | 2021-12-03 | 2021-12-03 | Horizontal supporting platform for circuit board illumination detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111468130.4A CN114235863B (en) | 2021-12-03 | 2021-12-03 | Horizontal supporting platform for circuit board illumination detection |
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| Publication Number | Publication Date |
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| CN114235863A true CN114235863A (en) | 2022-03-25 |
| CN114235863B CN114235863B (en) | 2024-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111468130.4A Active CN114235863B (en) | 2021-12-03 | 2021-12-03 | Horizontal supporting platform for circuit board illumination detection |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020196421A1 (en) * | 2001-06-21 | 2002-12-26 | Nikon Corporation | Stage device, exposure apparatus and method |
| US20060080849A1 (en) * | 2004-10-19 | 2006-04-20 | Mccarty Robin | Self-leveling laser alignment tool and method thereof |
| JP2010190640A (en) * | 2009-02-17 | 2010-09-02 | Rizumu Co Ltd | Inclination measuring instrument |
| US20120090184A1 (en) * | 2009-03-26 | 2012-04-19 | Robert Bosch Gmbh | Self-Leveling Multi-Line Laser Device |
| WO2015096060A1 (en) * | 2013-12-25 | 2015-07-02 | Robert Bosch Company Limited | Multifunction laser leveling tool |
| CN205691106U (en) * | 2016-05-27 | 2016-11-16 | 厦门精图信息技术有限公司 | A kind of building inclination detection prior-warning device of intelligence |
| CN110528385A (en) * | 2019-08-30 | 2019-12-03 | 安徽省路桥试验检测有限公司 | Road and bridge detect job platform |
| CN110757787A (en) * | 2019-11-18 | 2020-02-07 | 温州大学 | 3D printer with online laser leveling detection device |
| CN113513677A (en) * | 2021-05-06 | 2021-10-19 | 中国科学院西北生态环境资源研究院 | Large-inclination-angle self-leveling device |
-
2021
- 2021-12-03 CN CN202111468130.4A patent/CN114235863B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020196421A1 (en) * | 2001-06-21 | 2002-12-26 | Nikon Corporation | Stage device, exposure apparatus and method |
| US20060080849A1 (en) * | 2004-10-19 | 2006-04-20 | Mccarty Robin | Self-leveling laser alignment tool and method thereof |
| JP2010190640A (en) * | 2009-02-17 | 2010-09-02 | Rizumu Co Ltd | Inclination measuring instrument |
| US20120090184A1 (en) * | 2009-03-26 | 2012-04-19 | Robert Bosch Gmbh | Self-Leveling Multi-Line Laser Device |
| WO2015096060A1 (en) * | 2013-12-25 | 2015-07-02 | Robert Bosch Company Limited | Multifunction laser leveling tool |
| CN205691106U (en) * | 2016-05-27 | 2016-11-16 | 厦门精图信息技术有限公司 | A kind of building inclination detection prior-warning device of intelligence |
| CN110528385A (en) * | 2019-08-30 | 2019-12-03 | 安徽省路桥试验检测有限公司 | Road and bridge detect job platform |
| CN110757787A (en) * | 2019-11-18 | 2020-02-07 | 温州大学 | 3D printer with online laser leveling detection device |
| CN113513677A (en) * | 2021-05-06 | 2021-10-19 | 中国科学院西北生态环境资源研究院 | Large-inclination-angle self-leveling device |
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| CN114235863B (en) | 2024-06-04 |
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Effective date of registration: 20240429 Address after: Room 101, Building 1, No. 19 Fuma 1st Road, Chigang, Humen Town, Dongguan City, Guangdong Province, 523000 Applicant after: Dongguan Xinnuo Electronic Technology Co.,Ltd. Country or region after: China Address before: 116200 No. 159, industrial park, wawo Town, Pulandian City, Dalian City, Liaoning Province Applicant before: Wan Xiuyan Country or region before: China |
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