CN112212967A - Amplitude testing device - Google Patents
Amplitude testing device Download PDFInfo
- Publication number
- CN112212967A CN112212967A CN202011296940.1A CN202011296940A CN112212967A CN 112212967 A CN112212967 A CN 112212967A CN 202011296940 A CN202011296940 A CN 202011296940A CN 112212967 A CN112212967 A CN 112212967A
- Authority
- CN
- China
- Prior art keywords
- base
- amplitude
- lever
- testing apparatus
- amplitude testing
- 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
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention provides an amplitude testing device, which comprises a base; the object stage is arranged on the base and used for bearing and fixing an object to be detected, and the object to be detected comprises a vibration end; the plane mirror is fixedly arranged on the vibration end of the object to be measured; the laser emitter is arranged on the base and used for emitting laser to the plane mirror on the vibration end; and the display sheet is arranged above the objective table and used for displaying the length of the laser reflected by the plane mirror so as to obtain the amplitude of the vibration end of the object to be measured. Compared with the prior art, the amplitude testing device provided by the invention has the advantages that the laser emitter is arranged on the base, the plane mirror is arranged on the object to be tested, the amplitude of the object to be tested is measured by the laser reflection principle, the amplitude is tested by utilizing the laser reflection principle and the similar triangle principle, the principle is simple, the operation is convenient, and the measurement is accurate. The problem that no device for testing the amplitude of the electric toothbrush exists in the research and development stage at present is solved.
Description
Technical Field
The invention belongs to the technical field of small household appliance amplitude testing, and particularly relates to an amplitude testing device.
Background
At present, the oral care market is prosperous and the electric toothbrushes are increasingly sold. The electric toothbrush can make the brush head generate high-frequency vibration through the quick rotation or vibration of the motor core, instantly decompose toothpaste into fine foam to deeply clean teeth gaps, and meanwhile, the vibration of the brush hair can promote the blood circulation of the oral cavity and has a massage effect on gum tissues.
In principle, electric toothbrushes have two main categories: rotation and vibration. The principle of the rotary toothbrush is simple, namely the motor drives the circular brush head to rotate, the friction effect is enhanced while the ordinary tooth brushing action is carried out, the rotary toothbrush is high in noise, the tooth surface is cleaned cleanly, the tooth gaps are relatively weak to clean, the abrasion to teeth is large, and the rotary toothbrush is not recommended to be used for a long time. The vibration type toothbrush is more complicated and higher in price. The vibrating toothbrush is internally provided with an electrically driven vibrating motor, so that the brush head can generate high-frequency swinging in a direction perpendicular to the brush handle, but the swinging amplitude is small.
The electric toothbrush is a mature product, and currently, equipment for testing the amplitude of the vibration type electric toothbrush is lacked, and the amplitude of the electric toothbrush is lacked in the research and development stage.
Disclosure of Invention
The invention aims to provide an amplitude testing device to solve the problem that the prior art lacks equipment for testing the amplitude of an electric toothbrush.
In order to achieve the purpose, the invention adopts the technical scheme that: an amplitude testing device is provided, which comprises a base; the object stage is arranged on the base and used for bearing and fixing an object to be detected, and the object to be detected comprises a vibration end; the plane mirror is fixedly arranged on the vibration end of the object to be detected; the laser emitter is arranged on the base and used for emitting laser to the plane mirror on the vibration end; and the display sheet is arranged above the objective table and used for displaying the length of the laser reflected by the plane mirror so as to obtain the amplitude of the vibration end of the object to be measured.
Further, be provided with at least one supporting component on the base, supporting component includes support column and display pedestal, the support column is fixed in on the base, the display pedestal install in just be equipped with a centre gripping mouth with the centre gripping fixed on the support column the display piece.
Furthermore, the base is provided with four support legs for supporting the object stage, an adjusting groove is formed in the joint of the object stage and the support legs, a fastening piece is arranged on the adjusting groove, and the position of the object stage on the base can be adjusted by means of the cooperation of the fastening piece and the adjusting groove.
Furthermore, a groove for accommodating an article to be detected is formed in the objective table, and a long arm switch is arranged in the groove; the long arm switch is connected with the laser emitter and used for controlling the laser emitter to be turned on and off.
Further, a cushion pad is laid in the groove.
Furthermore, a support rod for supporting the laser emitter is arranged on the base; and a reading reflective mirror is further arranged on the supporting rod and used for reading the upper reading of the display piece.
Further, a lever is arranged on the base, a supporting seat used for bearing the lever is arranged on the base, a placing platform used for bearing an article to be tested is arranged at one end of the lever, and an adjusting block used for adjusting the balance of the lever is arranged at the other end of the lever.
Furthermore, a first sliding groove for the placing table to slide is formed in the lever, and a second sliding groove for the adjusting block to slide is further formed in the lever.
Furthermore, the adjusting block is provided with a hanging ring which is used for hanging an additional weight to adjust the balance of the lever.
Furthermore, the base is provided with a quick clamp used for fixing the object to be detected on the object stage.
The amplitude testing device provided by the invention has the beneficial effects that: compared with the prior art, the laser emitter is arranged on the base, the plane mirror is arranged on the object to be measured, the amplitude of the object to be measured is measured according to the laser reflection principle, the amplitude is measured according to the laser reflection principle and the similar triangular principle, and the laser amplitude measuring device is simple in principle, convenient to operate and accurate in measurement. The problem that no device for testing the amplitude of the electric toothbrush exists in the research and development stage at present is solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a first schematic structural diagram of an amplitude testing apparatus according to an embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic diagram of an amplitude test provided by an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an amplitude testing apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an amplitude testing apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an amplitude testing apparatus provided in an embodiment of the present invention, in which an electric toothbrush is not shown.
Wherein, in the drawings, the reference numerals are mainly as follows:
1. a base; 2. an object stage; 3. a laser transmitter; 4. a display sheet; 5. a plane mirror; 6. a display stand; 7. a support pillar; 8. quickly clamping; 9. a silica gel pad; 10. a long arm switch; 11. a support bar; 12. a reading reflector; 12. a lever; 13. a supporting seat; 14. a placing table; 15. an adjusting block; 18. a hoisting ring; 19. an electric toothbrush; 20. a weight; 21. a base; 22. a first connection block; 23. a second connecting block; 24. a connecting rod; 25. a connecting plate; 26. a support leg; 27. and (4) adjusting the groove.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to fig. 3, an amplitude testing apparatus according to an embodiment of the present invention will be described. The amplitude testing device comprises a base 1, an object stage 2, a laser emitter 3 and a display sheet 4. The laser emitter 3, the display sheet 4 and the object stage 2 are arranged on the base 1, and the object stage 2 is used for bearing an object to be tested, in the embodiment, the object to be tested is an electric toothbrush 19. The display piece 4 is made of semitransparent materials, the display piece 4 is arranged above the objective table 2, and scales are arranged on the display piece 4, so that reading and judgment are facilitated. The back of the brush head of the electric toothbrush 19 is provided with a plane mirror 5, and the distance from the rotating shaft of the motor of the electric toothbrush 19 to the display sheet 4 is approximately equal to the distance from the plane mirror 5 to the display sheet 4. After the electric toothbrush 19 is started, the brush head swings left and right, the laser point is irradiated on the mirror surface and reflected to the display sheet 4 by the mirror surface, and a light ray, namely a line segment AB, appears on the display sheet 4 in the swinging process of the brush head; the line segment the bristles sweep over the bristle platform 14, namely the line segment CD. The line segment AB and the boundary of the laser swept area form a triangle ABE, the line segment CD and the bristle swept area form a triangle DCE, the triangle ABE is similar to the triangle DCE, and the length of the line segment AB to the length of the line segment CD is equal to the height from the point E to the line segment AB to the height from the point E to the line segment CD. The bristle length is approximately equal to the height of point E to line segment CD and the distance of the mirror surface to the display stand 6 is approximately equal to the height of point E to line segment AB. The oscillation distance of the brush bristles, namely the amplitude, can be calculated according to the similar proportion by measuring the length of the brush bristles, the length of light and the distance from the mirror surface to the semitransparent display pedestal 6.
Compared with the prior art, the amplitude testing device provided by the invention has the advantages that the laser emitter 3 is arranged on the base 1, the plane mirror 5 is arranged on the object to be tested, the amplitude of the object to be tested is measured by the laser reflection principle, the amplitude is tested by utilizing the laser reflection principle and the similar triangular principle, the principle is simple, the operation is convenient, and the measurement is accurate. Solves the problem that no device for testing the amplitude of the electric toothbrush 19 exists in the research and development stage at present.
Specifically, referring to fig. 1 and 4, in the present embodiment, a supporting column 7 and a display pedestal 6 are disposed on the base 1, the supporting column 7 is used for supporting the display pedestal 6, and the display sheet 4 is placed on the display pedestal 6. Two support columns 7 are arranged on the base 1, each support column 7 is provided with a display pedestal 6, and the display sheet 4 is clamped between the two display pedestals 6. Wherein, the opposite surfaces of the two pedestals are provided with clamping openings, and the two ends of the display sheet 4 are respectively inserted in the clamping openings of the two pedestals.
Referring to fig. 1, 4 to 6, four support legs 26 for supporting the object stage 2 are provided on the base 1, a quick clamp 8 is provided beside the object stage 2, and after the electric toothbrush 19 is placed on the object stage 2, the electric toothbrush 19 is fixed on the object stage 2 by using the quick clamp 8. Offer the recess that is used for holding electric toothbrush 19 on objective table 2, be provided with the blotter in the recess, the optional silica gel pad 9 of blotter, when placing electric toothbrush 19, electric toothbrush 19 and the contact of silica gel pad 9 use silica gel pad 9 to separate electric toothbrush 19 and objective table 2 to reduce the wearing and tearing of objective table 2 to electric toothbrush 19. The silica gel pad 9 is connected with a long arm switch 10, one end of the long arm switch 10 is connected to the silica gel pad 9, and the other end is connected to the laser emitter 3. After the electric toothbrush 19 is placed on the silica gel pad 9, the pressure of the electric toothbrush 19 on the silica gel pad 9 triggers the long-arm switch 10, the long-arm switch 10 starts the laser emitter 3 in a clockwise manner, and the laser emitter 3 emits laser after being started. When the electric toothbrush 19 is taken down from the silica gel pad 9, the long-arm switch 10 controls the laser emitter 3 to be turned off, and the laser emitter 3 stops emitting laser. In addition, an adjusting groove 27 is formed at the joint of the object stage 2 and the four supporting legs 26, and a fastener is arranged on the supporting legs 26 to fix and loosen the supporting legs 26 and the object stage 2, so that the object stage 2 can be translated to adjust the position of the object stage 2 on the base 1.
Referring to fig. 1, 4 to 6, a support rod 11 is disposed on a base 1, the support rod 11 is used for supporting a laser emitter 3, a base 21 is disposed on the base 1, the support rod 11 is fixed on the base 21, the laser emitter 3 is fixed on the support rod 11, a reading reflective mirror 12 is further fixed on the support rod 11, and the reading reflective mirror 12 is located above the laser emitter 3. The reading reflective mirror 12 is connected with the support bar 11 through a first connecting block 22, the first connecting block 22 is sleeved on the support bar 11, the reading reflective mirror 12 is rotatably connected with the first connecting block 22, and the first connecting block 22 is locked on the support bar 11 through a headless screw. Reading reflector 12 can feed back the reading on display screen 4 to the user, because the light that laser emitter 3 launched is reflected to display screen 4 by level crossing 5 is vertical reflection, therefore, the user need stand when reading the reading on display screen 4 and reads, it is not very convenient during the reading, and reading reflector 12 reflects the reading on display screen 4, the user then need not to stand again and removes the reading, and is more convenient, furthermore, reading reflector 12 rotates with first connecting block 22 and is connected, therefore, can also adjust reading reflector 12's angle, make the user more convenient when the reading, accord with humanized design more. The support rod 11 is further sleeved with a second connecting block 23, the second connecting block 23 is locked on the support rod 11 through a headless screw, a connecting rod 24 is sleeved on the second connecting block 23, and the end portion of the connecting rod 24 is provided with the laser emitter 3. Wherein the end of the connecting rod 24 is provided with a connecting plate 25, and the laser emitter 3 is fixed on the connecting plate 25.
Referring to fig. 1, 2, 4 to 6, in the present embodiment, the base 1 is further provided with a supporting seat 13 and a lever 12, the supporting seat 13 supports the lever 12, and the lever 12 is rotatably connected to the supporting seat 13. One end of the lever 12 is provided with a placing table 14, the other end is provided with an adjusting block 15, the placing table 14 is used for placing a brush head of an electric toothbrush 19, and the adjusting block 15 is used for adjusting the balance of the lever 12. First spout and second spout have been seted up on lever 12, place platform 14 and set up in first spout, regulating block 15 sets up in the second spout, places platform 14 and regulating block 15 and can slide in first spout and second spout respectively, places platform 14 and slides in first spout and conveniently adapts to the position of 19 brush heads of electric toothbrush, and regulating block 15 slides in the second spout can adjust lever 12's balance. In addition, the adjusting block 15 is further provided with a hanging ring 18, the hanging ring 18 is used for hanging an external weight to adjust the balance of the lever 12, and the weight selected in the embodiment is a weight 20.
The working process of the amplitude testing device is as follows: first, the placing table 14 and the adjusting block 15 are moved to make the objective table 2 and the placing table 14 on the same straight line and balance the lever 12, or the weight 20 can be hung on the adjusting block 15 according to the required load, and the weight 20 with the same mass is placed on the placing table 14 to adjust the balance. The back of the brush head of the electric toothbrush 19 is pasted with a reflective lens, the electric toothbrush 19 is placed in the silica gel pad 9, the electric toothbrush 19 is clamped by the quick clamp 8, the electric toothbrush 19 touches the long-arm switch 10, and the long-arm switch 10 enables the laser emitter 3 to be powered on to emit laser. The flanged screws are loosened, the position of the stage 2 is adjusted so that the bristles are placed on the placing table 14, and then the flanged screws are tightened. The display pedestal 6 is adjusted to have a distance to the reflective lens which is a preset multiple (ten times in the present embodiment) of the length of the brush, so that the amplified data can be accurately measured. Two headless screws on the second connecting block 23 are loosened, the second connecting block 23 and the connecting rod 24 are adjusted, so that laser beams emitted by the laser emitter 3 are reflected to the middle area of the display piece 4 through the reflecting lens, and the two headless screws on the first connecting block 22 are locked. The headless screw on the first connecting block 22 is loosened and the reading mirror 12 is adjusted so that the operator can see the light spot through the reading mirror 12 while sitting down. The display piece 4 is marked with size scales, the electric toothbrush 19 is started, the brush head swings, light rays appear corresponding to the display piece 4, and the length of the light rays is read through the scales. The light length is divided by ten to obtain an amplitude measurement of the power toothbrush 19 and recorded.
The invention has the following beneficial effects:
the amplitude is amplified through an optical principle, the resolution is increased, the test is convenient, and the error is reduced.
The reading can be carried out through the adjustable reading reflective mirror 12, the operator can sit and stand, and the labor intensity is low.
The laser head emits laser downwards, and the measurement is carried out in a reflection mode, so that eyes are not injured.
The load of the electric toothbrush 19 is adjustable, and the electric toothbrush is convenient to operate by replacing the weight 20.
The display piece 4 is provided with scales, so that reading and judgment are facilitated.
When the toothbrush is placed into the silica gel pad 9 through the long-arm switch 10, the laser emitter 3 works, and the service life of the laser emitter 3 is prolonged.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. Amplitude testing arrangement, its characterized in that includes:
a base;
the object stage is arranged on the base and used for bearing and fixing an object to be detected, and the object to be detected comprises a vibration end;
the plane mirror is fixedly arranged on the vibration end of the object to be detected;
the laser emitter is arranged on the base and used for emitting laser to the plane mirror on the vibration end; and
and the display sheet is arranged above the objective table and used for displaying the length of the laser reflected by the plane mirror so as to obtain the amplitude of the vibration end of the object to be detected.
2. The amplitude testing apparatus of claim 1, wherein: be provided with at least one supporting component on the base, supporting component includes support column and display pedestal, the support column is fixed in on the base, the display pedestal install in just be equipped with a centre gripping mouth on the support column and fix with the centre gripping the display piece.
3. The amplitude testing apparatus of claim 1, wherein: the base is provided with four support legs for supporting the objective table, an adjusting groove is formed in the joint of the objective table and the support legs, a fastening piece is arranged on the adjusting groove, and the position of the objective table on the base can be adjusted by means of the cooperation of the fastening piece and the adjusting groove.
4. The amplitude testing apparatus of claim 1, wherein: a groove for accommodating an article to be detected is formed in the objective table, and a long-arm switch is arranged in the groove; the long arm switch is connected with the laser emitter and used for controlling the laser emitter to be turned on and off.
5. The amplitude testing apparatus of claim 4, wherein: a buffer cushion is laid in the groove.
6. The amplitude testing apparatus of claim 1, wherein: the base is provided with a supporting rod for supporting the laser emitter; and a reading reflective mirror is further arranged on the supporting rod and used for reading the upper reading of the display piece.
7. The amplitude testing apparatus of claim 1, wherein: the base is provided with a lever, the base is provided with a supporting seat used for bearing the lever, one end of the lever is provided with a placing platform used for bearing an article to be tested, and the other end of the lever is provided with an adjusting block used for adjusting the balance of the lever.
8. The amplitude testing apparatus of claim 7, wherein: the lever is provided with a first sliding groove for the placing table to slide, and a second sliding groove for the adjusting block to slide.
9. The amplitude testing apparatus of claim 7, wherein: the adjusting block is provided with a hanging ring which is used for hanging an additional heavy block so as to adjust the balance of the lever.
10. The amplitude testing apparatus of claim 1, wherein: the base is provided with a quick clamp used for fixing an object to be detected on the objective table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011296940.1A CN112212967A (en) | 2020-11-18 | 2020-11-18 | Amplitude testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011296940.1A CN112212967A (en) | 2020-11-18 | 2020-11-18 | Amplitude testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112212967A true CN112212967A (en) | 2021-01-12 |
Family
ID=74067914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011296940.1A Pending CN112212967A (en) | 2020-11-18 | 2020-11-18 | Amplitude testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112212967A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113218377A (en) * | 2021-06-03 | 2021-08-06 | 扬州工业职业技术学院 | Vertical measuring device for building wall and measuring method thereof |
| CN116577123A (en) * | 2022-10-24 | 2023-08-11 | 广州星际悦动股份有限公司 | Swing testing method and system for electric toothbrush |
-
2020
- 2020-11-18 CN CN202011296940.1A patent/CN112212967A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113218377A (en) * | 2021-06-03 | 2021-08-06 | 扬州工业职业技术学院 | Vertical measuring device for building wall and measuring method thereof |
| CN113218377B (en) * | 2021-06-03 | 2023-05-30 | 扬州工业职业技术学院 | Vertical measuring device and method for building wall |
| CN116577123A (en) * | 2022-10-24 | 2023-08-11 | 广州星际悦动股份有限公司 | Swing testing method and system for electric toothbrush |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112212967A (en) | Amplitude testing device | |
| Neme et al. | Effect of prophylactic polishing protocols on the surface roughness of esthetic restorative materials | |
| CA2073407A1 (en) | Dental material curing apparatus | |
| JP2012524587A (en) | Dental cleaning equipment | |
| CN213455827U (en) | Amplitude testing device | |
| CN104458458A (en) | Tester for testing durability of tooth brush hairs | |
| CN112161693A (en) | Method for detecting vibration frequency of electric toothbrush | |
| Parry et al. | Control of brushing variables for the in vitro assessment of toothpaste abrasivity using a novel laboratory model | |
| Yılmaz et al. | Investigation of surface roughness values of various restorative materials after brushing with blue covarine containing whitening toothpaste by two different methods: AFM and profilometer | |
| CN219046001U (en) | Electric toothbrush effort testing arrangement | |
| CN211042996U (en) | Toothbrush brush hair durability testing arrangement | |
| CN114993721A (en) | Device for testing amplitude frequency of electric toothbrush | |
| CN107328464B (en) | Audio vibration toothbrush vibration angle measuring equipment | |
| CN209154074U (en) | A kind of dental scaler brush head assembly | |
| Purnaveja et al. | Compatibility of denture cleansers with some new self curing denture base materials | |
| CN219434209U (en) | Ultrasonic tooth cleaner detection device | |
| CN208591031U (en) | A kind of cataract detection slit-lamp | |
| CN213364486U (en) | Dental floss durability testing arrangement | |
| CN216350109U (en) | Fatigue test determination device for sponge | |
| CN211066587U (en) | Sphygmomanometer with high fixation and convenient use | |
| CN215458902U (en) | Installation measuring device for fixing false tooth | |
| US3805388A (en) | Apparatus for holding dental or medical instruments | |
| CN218180500U (en) | Detection device for cotton soft towel production | |
| CN219229922U (en) | CT inspection service creeper | |
| CN216348788U (en) | Handheld terminal detection table of multifunctional dentist operating table |
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: 822, 823, 825, 826, South China Development Center, No.1, South China Avenue, Hehua community, Pinghu street, Longgang District, Shenzhen, Guangdong 518000 Applicant after: Shenzhen Huijin Intelligent Industry Co.,Ltd. Address before: 518000 C201, 2 / F, building C, Jianshe East Road, Qinghua community, Longhua street, Longhua District, Shenzhen City, Guangdong Province Applicant before: Shenzhen yuanfuhai Intelligent Industry Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 822, 823, 825, 826, South China Development Center, No.1, South China Avenue, Hehua community, Pinghu street, Longgang District, Shenzhen, Guangdong 518000 Applicant after: Shenzhen Huijin Intelligent Industry Co.,Ltd. Address before: 822, 823, 825, 826, South China Development Center, No.1, South China Avenue, Hehua community, Pinghu street, Longgang District, Shenzhen, Guangdong 518000 Applicant before: Shenzhen Huijin Intelligent Industry Co.,Ltd. |
|
| CB02 | Change of applicant information |