CN111434804A - Surface treatment method of aluminum alloy material and application thereof - Google Patents
Surface treatment method of aluminum alloy material and application thereof Download PDFInfo
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- CN111434804A CN111434804A CN201910037928.XA CN201910037928A CN111434804A CN 111434804 A CN111434804 A CN 111434804A CN 201910037928 A CN201910037928 A CN 201910037928A CN 111434804 A CN111434804 A CN 111434804A
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 118
- 239000000956 alloy Substances 0.000 title claims abstract description 115
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000004381 surface treatment Methods 0.000 title claims abstract description 29
- 238000005498 polishing Methods 0.000 claims abstract description 36
- 238000005238 degreasing Methods 0.000 claims abstract description 10
- 239000002253 acid Substances 0.000 claims description 25
- 239000000243 solution Substances 0.000 claims description 21
- 238000005530 etching Methods 0.000 claims description 14
- 229910017604 nitric acid Inorganic materials 0.000 claims description 12
- 244000137852 Petrea volubilis Species 0.000 claims description 9
- 238000002791 soaking Methods 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000003929 acidic solution Substances 0.000 claims description 3
- 238000005237 degreasing agent Methods 0.000 claims description 3
- 239000013527 degreasing agent Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 238000012360 testing method Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003486 chemical etching Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
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-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/16—Acidic compositions
- C23F1/20—Acidic compositions for etching aluminium or alloys thereof
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/12—Light metals
- C23G1/125—Light metals aluminium
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- ing And Chemical Polishing (AREA)
Abstract
The invention relates to a surface treatment method of an aluminum alloy material and application thereof. The treatment process comprises the following steps: carrying out degreasing and deoiling treatment on the surface of the aluminum alloy material to be treated; pretreating the surface of the aluminum alloy material to be treated; and polishing the surface of the aluminum alloy material to be treated. The surface of the aluminum alloy material obtained by the surface treatment method of the aluminum alloy material has a bright broken flower pattern effect.
Description
Technical Field
The invention relates to the field of processing of metal materials, in particular to a surface treatment method of an aluminum alloy material and application thereof.
Background
The aluminum alloy material is widely applied to the industries of appearance parts such as automobile manufacturing, mobile phones, computers, watches and the like due to low density, high mechanical strength, strong corrosion resistance and outstanding electric and heat conducting properties. And because the aluminum alloy is easy to recover, the aluminum alloy becomes a green and environment-friendly structural material in the 21 st century.
But the surface color of the traditional aluminum alloy material is dull and monotonous.
Disclosure of Invention
Accordingly, there is a need for a surface treatment method capable of treating the surface of an aluminum alloy material to have a bright and patterned effect.
In addition, the application of the surface treatment method in manufacturing the electronic equipment shell is also provided.
A surface treatment method of an aluminum alloy material comprises the following steps:
carrying out degreasing and deoiling treatment on the surface of the aluminum alloy material to be treated;
pretreating the surface of the aluminum alloy material to be treated;
polishing the surface of the aluminum alloy material to be treated;
and carrying out acid etching treatment on the surface of the aluminum alloy material to be treated.
In one embodiment, the step of degreasing and deoiling the surface of the aluminum alloy material to be treated comprises the following steps: and soaking the surface of the aluminum alloy material to be treated for 4min to 5min by using a degreasing agent at the temperature of 40 ℃ to 50 ℃.
In one embodiment, the step of pretreating the surface of the aluminum alloy material to be treated comprises the step of soaking the surface of the aluminum alloy material to be treated for 40-50 s at room temperature by using pretreatment liquid, wherein the pretreatment liquid comprises 35.5 g/L-42.6 g/L HNO317.25 g/L-28.75 g/L HF and 23.6 g/L-35.4 g/L HCl.
In one embodiment, the step of polishing the surface of the aluminum alloy material to be treated comprises the following steps: firstly, carrying out rough polishing treatment on the surface of the aluminum alloy material to be treated by using 800-1500 meshes of sand paper at the rotating speed of 7000 r/s-8000 r/s; then, using 2000-3000 mesh sand paper, and carrying out middle polishing treatment on the surface of the aluminum alloy material to be treated at the rotating speed of 5000-6500 r/s; and then, carrying out fine polishing treatment on the surface of the aluminum alloy material to be treated by 3500-4500-mesh sand paper at the rotating speed of 2000-3500 r/s.
In one embodiment, the step of acid etching the surface of the aluminum alloy material to be treated comprises the step of acid etching the surface of the aluminum alloy material to be treated for 30-45 s at room temperature by using an acid solution, wherein the acid solution comprises 35.5 g/L-42.6 g/L HNO317.25 g/L-28.75 g/L HF and 23.6 g/L-35.4 g/L HCl.
In one embodiment, after the step of performing acid etching treatment on the surface of the aluminum alloy material to be treated, the method further comprises the following steps: and cleaning the surface of the aluminum alloy material to be treated.
The surface treatment method of the aluminum alloy material is applied to manufacturing of electronic equipment shells.
Through the test: the surface of the aluminum alloy material treated by the surface treatment method of the aluminum alloy material shows a surface treatment method with a bright garland pattern effect.
Drawings
Fig. 1 is a flowchart of a surface treatment method for an aluminum alloy material according to an embodiment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Herein, unless otherwise specified, the room temperature means 15 ℃ to 40 ℃.
As shown in fig. 1, a surface treatment method of an aluminum alloy material according to an embodiment includes the steps of:
step S110: and degreasing and deoiling the surface of the aluminum alloy material to be treated.
Specifically, step S110 includes: soaking the surface of the aluminum alloy material to be treated with the degreasing agent for 4min to 5min at the temperature of 45 ℃ to 65 ℃ and drying.
The degreasing treatment of the surface of the aluminum alloy material to be treated in step S110 is to remove surface grease and prepare for the next pretreatment.
Step S120: and (3) pretreating the surface of the aluminum alloy material to be treated.
Specifically, the step S120 comprises the step of soaking the surface of the aluminum alloy material to be treated for 40-50S by using a pretreatment solution at room temperature, wherein the pretreatment solution comprises 35.5 g/L-42.6 g/L HNO317.25 g/L-28.75 g/L HF and 23.6 g/L-35.4 g/L HCl.
Step S120 is to primarily show the broken flower-like patterns on the surface of the aluminum alloy, determine whether the crystals are uniform and obvious, screen the defective products with poor surface effect, and save the cost.
Step S130: and (3) polishing the surface of the aluminum alloy material to be treated.
Specifically, step S130 includes step S131, step S132, and step S133.
Step S131: and (3) roughly polishing the surface of the aluminum alloy material to be treated by using 800-1500 meshes of sand paper at the rotating speed of 7000 r/s-8000 r/s.
The CNC knurl of the surface of the aluminum alloy material is primarily removed through step S131.
Step S132: and (3) carrying out middle polishing treatment on the surface of the aluminum alloy material to be treated by using 2000-3000 meshes of sand paper at the rotating speed of 5000-6500 r/s.
Step S133: and (3) performing fine polishing treatment on the surface of the aluminum alloy material to be treated by using 3500-4500-mesh sand paper at the rotating speed of 2000-3500 r/s.
Step S130 is to obtain an aluminum alloy material having a bright surface.
Step S140: and carrying out acid etching treatment on the aluminum alloy material to be treated.
Specifically, the step S140 includes: and (3) carrying out acid etching on the surface of the aluminum alloy material to be treated for 30-45 s at room temperature by using an acid solution.
In one embodiment, the acidic solution comprises 35.5 g/L-42.6 g/L HNO317.25 g/L-28.75 g/L HF and 23.6 g/L-35.4 g/L HCl.
The step S140 can make the aluminum alloy material with a bright surface have a flower-like pattern effect.
Step S150: and cleaning the surface of the aluminum alloy material to be treated.
Step S150 is to wash away the acid solution and impurities remaining in step S140.
The surface treatment method of the aluminum alloy material is applied to manufacturing of the electronic equipment shell. The electronic equipment shell which is made of the aluminum alloy material treated by the surface treatment method has a bright flowered pattern artistic effect, and meets the diversified aesthetic requirements of consumers.
The surface treatment method of the aluminum alloy material at least has the following characteristics:
(1) the processing technology greatly improves the smoothness and the flatness of the surface of the aluminum alloy material and enables the aluminum alloy material to show a bright broken flower effect;
(2) the acid solution in the acid etching treatment has low cost, simple preparation, short chemical etching time on the aluminum alloy material and high surface treatment capacity of the product;
(3) the treatment process reduces the surface treatment difficulty without additionally increasing new surface treatment equipment, thereby greatly reducing the cost of enterprises.
The following are specific examples:
example 1
The surface treatment method of the aluminum alloy material of the embodiment includes the following steps:
(1) the aluminum alloy material to be treated was immersed in an oil removing agent Aoye 161 produced by Aoye corporation of Japan at a temperature of 40 ℃ for 5 minutes, and subjected to degreasing treatment.
(2) Soaking the surface of the aluminum alloy material to be treated for 40s at room temperature by using a pretreatment solution, wherein the pretreatment solution comprises 42 g/L HNO328 g/L HF and 35 g/L HCl.
(3) And (3) polishing the surface of the aluminum alloy material by using a polishing machine and adopting 800-mesh abrasive paper at a polishing wheel rotating speed of 8000r/s until no obvious CNC (computerized numerical control) knife line exists on the surface of the aluminum alloy material.
(4) And polishing the surface of the aluminum alloy material by using a polishing machine and adopting 3000-mesh abrasive paper at the rotating speed of a polishing wheel of 5000 r/s.
(5) The surface of the aluminum alloy material is further polished by a polisher at the rotating speed of 2000r/s by using 4500-mesh abrasive paper, so that the surface of the aluminum alloy material is smooth and bright.
(6) At room temperature, acid etching treatment is carried out on the surface of the aluminum alloy material for 30s by using an acid solution, wherein the acid solution comprises 42 g/L HNO328 g/L HF and 35 g/L HCl.
(7) And (3) cleaning and drying the aluminum alloy material by using deionized water to obtain the aluminum alloy material with a bright surface and a broken flower pattern.
Example 2
The surface treatment method of the aluminum alloy material of the embodiment includes the following steps:
(1) the aluminum alloy material to be treated was immersed in an oil removing agent Aoye 161 produced by Aoye corporation of Japan at a temperature of 50 ℃ for 4 minutes, and subjected to degreasing treatment.
(2) Soaking the surface of the aluminum alloy material to be treated for 50s by using a pretreatment solution at room temperature, wherein the pretreatment solution comprises 35 g/L HNO318 g/L HF and 24 g/L HCl.
(3) And polishing the surface of the aluminum alloy material by using a polishing machine and adopting 1500-mesh abrasive paper at the rotating speed of a polishing wheel of 7000r/s until no obvious CNC (computerized numerical control) knife line exists on the surface of the aluminum alloy material.
(4) And polishing the surface of the aluminum alloy material by using a polishing machine and adopting 2000-mesh abrasive paper at the rotating speed of a polishing wheel of 6500 r/s.
(5) The surface of the aluminum alloy material is further polished by a polisher at the rotating speed of 2000r/s by using 4500-mesh abrasive paper, so that the surface of the aluminum alloy material is smooth and bright.
(6) At room temperature, acid etching is carried out on the surface of the aluminum alloy material for 45s by using an acid solution, wherein the acid solution comprises the following components of 35 g/L HNO318 g/L HF and 24 g/L HCl.
(7) And (3) cleaning and drying the aluminum alloy material by using high-purity water to obtain the aluminum alloy material with a bright surface and a broken flower pattern.
Example 3
The surface treatment method of the aluminum alloy material of the embodiment includes the following steps:
(1) the aluminum alloy material to be treated was immersed in an oil removing agent Aoye 161 produced by Aoye corporation of Japan at a temperature of 50 ℃ for 4 minutes, and subjected to degreasing treatment.
(2) Soaking the surface of the aluminum alloy material to be treated for 45s by using a pretreatment solution at room temperature, wherein the pretreatment solution comprises 35 g/L HNO318 g/L HF and 24 g/L HCl.
(3) And polishing the surface of the aluminum alloy material by using a polishing machine and 1500-mesh abrasive paper at a polishing wheel rotating speed of 8000r/s until no obvious CNC (computerized numerical control) tool lines exist on the surface of the aluminum alloy material.
(4) And polishing the surface of the aluminum alloy material by using a polishing machine and adopting 2000-mesh abrasive paper at the rotating speed of a polishing wheel of 6000 r/s.
(5) And (3) further polishing the surface of the aluminum alloy material by using a polishing machine and 3500-mesh abrasive paper at the rotation speed of a polishing wheel of 3500r/s to ensure that the surface of the aluminum alloy material is smooth and bright.
(6) At room temperature, acid etching is carried out on the surface of the aluminum alloy material for 45s by using an acid solution, wherein the acid solution comprises the following components of 35 g/L HNO318 g/L HF and 24 g/L HCl.
(7) And (3) cleaning and drying the aluminum alloy material by using deionized water, and obtaining the aluminum alloy material with a bright surface and a broken flower pattern.
Comparative example 1
The aluminum alloy material of comparative example 1 was a common aluminum alloy material to be treated without the above surface treatment.
Test section
The test method comprises the following steps:
and (3) testing the effect of the broken flower pattern: observing the surfaces of the aluminum alloy materials of the above examples and comparative examples with naked eyes by means of a magnifying glass, a vernier caliper or the like;
and (3) testing surface roughness: the surface of the material is scratched by a roughness meter and converted into a numerical value by needle vibration.
And (3) testing results: see table below.
TABLE 1
From the above table, it can be seen that: through tests, the aluminum alloy materials obtained in the examples 1 to 3 have low surface roughness Ra and have a garland pattern, and show a garland-like pattern effect with bright light.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A surface treatment method of an aluminum alloy material is characterized by comprising the following steps:
carrying out degreasing and deoiling treatment on the surface of the aluminum alloy material to be treated;
pretreating the surface of the aluminum alloy material to be treated;
polishing the surface of the aluminum alloy material to be treated;
and carrying out acid etching treatment on the surface of the aluminum alloy material to be treated.
2. The method for surface treatment of an aluminum alloy material as set forth in claim 1, wherein the step of degreasing and deoiling the surface of the aluminum alloy material to be treated comprises: and soaking the surface of the aluminum alloy material to be treated for 4min to 5min by using a degreasing agent at the temperature of 40 ℃ to 50 ℃.
3. The method for treating the surface of the aluminum alloy material according to claim 1, wherein the step of pretreating the surface of the aluminum alloy material to be treated comprises soaking the surface of the aluminum alloy material to be treated with a pretreatment solution for 40 to 50 seconds at room temperature, wherein the pretreatment solution comprises 35.5 g/L to 42.6 g/L HNO317.25 g/L-28.75 g/L HF and 23.6 g/L-35.4 g/L HCl.
4. The method for surface treatment of an aluminum alloy material as set forth in claim 1, wherein the step of subjecting the surface of the aluminum alloy material to be treated to polishing treatment comprises: firstly, carrying out rough polishing treatment on the surface of the aluminum alloy material to be treated by using 800-1500 meshes of sand paper at the rotating speed of 7000 r/s-8000 r/s; then, using 2000-3000 mesh sand paper, and carrying out middle polishing treatment on the surface of the aluminum alloy material to be treated at the rotating speed of 5000-6500 r/s; and then, carrying out fine polishing treatment on the surface of the aluminum alloy material to be treated by 3500-4500-mesh sand paper at the rotating speed of 2000-3500 r/s.
5. According to claimThe surface treatment method of the aluminum alloy material is characterized in that the step of carrying out acid etching treatment on the surface of the aluminum alloy material to be treated comprises the step of carrying out acid etching treatment on the surface of the aluminum alloy material to be treated for 30-45 s by using an acidic solution at room temperature, wherein the acidic solution comprises 35.5 g/L-42.6 g/L HNO317.25 g/L-28.75 g/L HF and 23.6 g/L-35.4 g/L HCl.
6. The method for surface treatment of an aluminum alloy material according to any one of claims 1 to 5, further comprising, after the step of subjecting the surface of the aluminum alloy material to be treated to acid etching: and cleaning the surface of the aluminum alloy material to be treated.
7. Use of the surface treatment method for an aluminum alloy material according to any one of claims 1 to 6 for manufacturing a case of an electronic device.
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| CN201910037928.XA CN111434804B (en) | 2019-01-15 | 2019-01-15 | Surface treatment method of aluminum alloy material and application thereof |
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| CN201910037928.XA CN111434804B (en) | 2019-01-15 | 2019-01-15 | Surface treatment method of aluminum alloy material and application thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003089885A (en) * | 2001-09-14 | 2003-03-28 | Nippon Light Metal Co Ltd | Surface treatment method for aluminum material and surface treated aluminum material |
| CN101845654A (en) * | 2009-03-23 | 2010-09-29 | 浙江帝龙新材料股份有限公司 | Aluminum strip anode oxidization process |
| CN102672340A (en) * | 2012-05-29 | 2012-09-19 | 李光 | Gold wire ball ultrasonic welding process directly performed on aluminum product |
| CN103586780A (en) * | 2013-11-14 | 2014-02-19 | 佛山市南海画亮极金属马赛克有限责任公司 | Sand-blast pattern product on aluminum alloy surface and manufacturing method thereof |
-
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- 2019-01-15 CN CN201910037928.XA patent/CN111434804B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003089885A (en) * | 2001-09-14 | 2003-03-28 | Nippon Light Metal Co Ltd | Surface treatment method for aluminum material and surface treated aluminum material |
| CN101845654A (en) * | 2009-03-23 | 2010-09-29 | 浙江帝龙新材料股份有限公司 | Aluminum strip anode oxidization process |
| CN102672340A (en) * | 2012-05-29 | 2012-09-19 | 李光 | Gold wire ball ultrasonic welding process directly performed on aluminum product |
| CN103586780A (en) * | 2013-11-14 | 2014-02-19 | 佛山市南海画亮极金属马赛克有限责任公司 | Sand-blast pattern product on aluminum alloy surface and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 杨丁: "《金属蚀刻技术》", 31 January 2008 * |
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Effective date of registration: 20231116 Address after: Room 103, Building 21, Building 5, Sima Environmental Protection Industrial Road, Changping Town, Dongguan City, Guangdong Province, 523000 Patentee after: Dongguan Xinmeida Material Technology Co.,Ltd. Address before: 523808 No.6, West Third Industrial Road, Songshanhu high tech Industrial Development Zone, Dongguan City, Guangdong Province Patentee before: GUANGDONG EVERWIN PRECISION TECHNOLOGY Co.,Ltd. |