CN104668922A - Manufacturing method of vacuum phase-change radiator - Google Patents
Manufacturing method of vacuum phase-change radiator Download PDFInfo
- Publication number
- CN104668922A CN104668922A CN201510097919.1A CN201510097919A CN104668922A CN 104668922 A CN104668922 A CN 104668922A CN 201510097919 A CN201510097919 A CN 201510097919A CN 104668922 A CN104668922 A CN 104668922A
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- CN
- China
- Prior art keywords
- end cover
- bottom end
- radiator
- change
- radiator body
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/10—Heat sinks
Abstract
The invention discloses a manufacturing method of a vacuum phase-change radiator. The vacuum phase-change radiator comprises a radiator body, an upper end cover and a lower end cover, wherein the radiator body has a hollow pipe; a phase-change working medium is loaded in the hollow pipe; the upper end cover and the lower end cover are welded at the two ends of the hollow pipe respectively; the upper end cover and/or the lower end cover are/is subjected to machine-shaping by using a hot extrusion process. The hot extrusion process comprises the following steps of material cutting, heating, shaping, preheating, reshaping and cooling. According to the manufacturing method of the vacuum phase-change radiator, the upper end cover and the lower end cover are molded by using the hot extrusion process; the cost is reduced; the problem that an end cover subjected to the machine-shaping in a conventional manner has micropores or finedraws is solved; the upper end cover and the lower end cover are welded on the radiator body by using a stirring welding or friction welding process; the connection at a welding spot is firm; the vacuum tightness is enhanced; the service life is longer.
Description
Technical field
The present invention relates to radiator manufacturing process technology field, especially relate to a kind of change-vacuum-phase change radiator manufacture method, in particular to the method for manufacturing end cover of this change-vacuum-phase change radiator and the welding method of end cap and radiator body.
Background technology
Change-vacuum-phase change radiator, as LED heronsbill radiator, as shown in Figure 1, it comprises the flower-shaped radiator body 1 of a sun, upper end cover 2 and bottom end cover 3, radiator body 1 has hollow tube 4, phase-change working substance is equiped with in this hollow tube 4, upper end cover 2 and bottom end cover 3 are welded in the two ends of this hollow tube 4 respectively, after welding fabrication, this hollow tube 4 forms airtight vacuum chamber, wherein radiator body 1, upper end cover 2 and bottom end cover 3 are aluminium, the upper surface of bottom end cover 3 is also provided with capillary structure 5, its effect is the thermal source place by capillary force, working medium being delivered to bottom end cover 3, and the heat of thermal source is taken away by heat absorption, capillary structure 5 also has the effect increasing heat exchange area simultaneously.
Because bottom end cover 3 directly contacts with thermal source, thus the heat conductivility of bottom end cover 3 is most important to radiator integral heat dispersion, if there is more micropore in bottom end cover 3 or finedraw can affect its heat conductivility, thus cause harmful effect to radiator integral heat dispersion.At present when manufacturing such change-vacuum-phase change radiator, upper end cover 2 and bottom end cover 3 adopt turn-milling cutting or die cast, there is micropore or finedraw in the end cap of this kind of traditional approach machine-shaping, also need to infiltrate after (micropore/finedraw impermeable seal technique) to this end cap, the effect of effective sealing could be played to the vacuum chamber of radiator body 1, this cumbersome efficiency is lower, and the impregnant cost consumed is higher.
The capillary structure 5 of bottom end cover 3 has metal twine, micro-group groove, foam metal material etc., bottom end cover 3 is processed capillary structure 5 more complicated, metal twine and foam metal material need just can be taken shape on bottom end cover by sintering process, and micro-group groove then needs to carry out repeatedly turnery processing on bottom end cover.Patent announcement CN203534296U discloses a kind of New LED heronsbill radiator, the bottom end cover 3 of this radiator is that die casting is one-body molded, the inner surface of bottom end cover 3 forms the microneedle array be made up of some projections, it adopts extrusion process and integrated mode to process capillary structure, processing technology is simplified, but this new processing technology still exists the problem of aforementioned micropore or finedraw, and extrusion process is adopted to be difficult to the uniformity of the microneedle array ensured on bottom end cover 3.
The manufacture craft of current change-vacuum-phase change radiator, when upper end cover 2 and bottom end cover 3 weld with radiator body 1, because bottom end cover 3 contacts with thermal source, upper end cover 2 also needs to carry out vacuum seal process, thus first the lower end of bottom end cover 3 with the hollow tube 4 of radiator body 1 is welded, again the upper end of upper end cover 2 with the hollow tube 4 of radiator body 1 is welded, as shown in the figure, the outer rim of upper end cover 2 and the hollow tube 4 tube wall matched in clearance of radiator body 3, thus be that the tube wall face of the upper surface of upper end cover 2 with the hollow tube 4 of radiator body 3 is welded when welding, this welding manner selects argon arc welding usually, make upper end cover 2 must sink in the hollow tube 4 of radiator body 1, the upper end of upper end cover 2 is formed with boss, moulding unsightly, connect insecure, vacuum leakproofness is poor, make the service life of whole radiator shorter.
Summary of the invention
For the deficiency that above-mentioned prior art exists, the object of this invention is to provide a kind of change-vacuum-phase change radiator manufacture method, one, adopt and redly rush technological forming upper end cover and bottom end cover, reduce costs, and there is the problem of micropore or finedraw in the end cap solving traditional approach machine-shaping; Its two, adopt stir weldering or friction welding technological upper end cover and bottom end cover are welded on radiator body, solder joint place is connected firmly, strengthen vacuum leakproofness, longer service life.
To achieve these goals, the technical solution adopted in the present invention is:
A kind of change-vacuum-phase change radiator manufacture method, this change-vacuum-phase change radiator comprises radiator body, upper end cover and bottom end cover, radiator body has hollow tube, phase-change working substance is equiped with in this hollow tube, upper end cover and bottom end cover are welded in the two ends of this hollow tube respectively, and upper end cover and/or bottom end cover adopt red processes of rushing shaping; Described red technique of rushing comprises the following steps:
A, blank, is cut into cylinder by aluminium section bar;
B, heating, is heated to 420-480 DEG C by this pole piece;
C, is shaped, extruded;
D, preheating, is preheated to 350-400 DEG C by shaping workpiece;
E, shaping, extrudes to carry out surface treatment to shaping workpiece;
F, cooling, naturally cools to normal temperature.
Wherein, described step C is that secondary extrusion is shaping, comprises shaping and extruded two steps of essence of pre-extrusion.
Wherein, described step C be three times extruded, comprise pre-extrusion shaping, first essence extruded and second essence extruded three each and every one steps.
Further scheme, upper end cover and/or bottom end cover adopt friction welding technological to weld with the hollow tube of radiator body, upper end cover and/or bottom end cover opposite heat sink body high-speed rotation, temperature arrising caused by friction is produced between the inwall of the outer rim of upper end cover and/or bottom end cover and the hollow tube of radiator body, and make it reach hot plastic state, after its cooling, realize the solid State Welding of upper end cover and/or bottom end cover and radiator body.
Preferred scheme, upper end cover and/or bottom end cover and the hollow tube of radiator body adopt and stir Welding and weld, between the tube wall of the outer rim of upper end cover and/or bottom end cover and the hollow tube of radiator body, there is gap, stir soldering tip to stretch in this gap and along this gap orbiting motion, the inwall stirring soldering tip high-speed rotation and the outer rim of upper end cover and/or bottom end cover and the hollow tube of radiator body produces temperature arrising caused by friction, and make it reach hot plastic state, after its cooling, realize the solid State Welding of upper end cover and/or bottom end cover and radiator body.
Further scheme, upper end cover and bottom end cover weld with radiator body and form vacuum chamber, and upper end cover is provided with perforate, are vacuumized by this vacuum chamber by this perforate, then inject phase-change working substance to described vacuum chamber, finally this perforate are sealed with rivet.
Adopt after technique scheme, the present invention compared to the prior art advantageously:
Change-vacuum-phase change radiator manufacture method of the present invention, adopt and redly rush technological forming upper end cover and bottom end cover, wherein red technique of rushing is from finish forge and the professional technique of a kind of advanced person that grows up of hot extrusion basis in modern age, applies to some extent at present in pipeline five metals production industry.High by red compactness of rushing upper end cover that technique obtains and/or bottom end cover of the present invention, there is the problem of micropore or finedraw in the end cap solving traditional approach machine-shaping, thus thermal conductivity is better, this process advan is shaping in bottom end cover microneedle array capillary structure, the uniformity of microneedle array is better, improves yields; Due to the processing step without the need to adopting infiltration again, therefore significantly cut down finished cost.Further, adopt and stir weldering or friction welding technological substitutes the argon arc welding technique of prior art, be welded on radiator body by upper end cover and bottom end cover, solder joint place is connected firmly and more attractive in appearance, also make the vacuum leakproofness of the vacuum chamber of radiator better, longer service life.Further, first upper end cover and bottom end cover are welded with radiator body, vacuumized by the perforate of upper end cover and load phase-change working substance, finally this perforate is sealed in the mode of rivet, be conducive to the difficulty of processing reducing welding sequence, improve working (machining) efficiency.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described:
Fig. 1 is the structural representation of the radiator described in background technology.
Fig. 2 is the structural representation of friction welding (FW) of the present invention.
Fig. 3 is the structural representation stirring weldering of the present invention.
Fig. 4 is the structural representation of upper end cover of the present invention.
Fig. 5 is the red schematic diagram rushing upper end cover described in technological forming for the present invention adopts.
Fig. 6 is the structural representation of another upper end cover of the present invention.
Fig. 7 is the red schematic diagram rushing another upper end cover described in technological forming for the present invention adopts.
Fig. 8 is the structural representation of bottom end cover of the present invention.
Fig. 9 is the red schematic diagram rushing bottom end cover described in technological forming for the present invention adopts.
In figure, 1: radiator body; 2: upper end cover; 3: bottom end cover; 4: hollow tube; 5: capillary structure; .
Detailed description of the invention
The following stated is only preferred embodiment of the present invention, does not therefore limit protection scope of the present invention.
Embodiment, see shown in Fig. 2 to Fig. 9:
A kind of change-vacuum-phase change radiator manufacture method, this change-vacuum-phase change radiator comprises radiator body 1, upper end cover 2 and bottom end cover 3, radiator body 1 has hollow tube 4, phase-change working substance is equiped with in this hollow tube 4, upper end cover 2 and bottom end cover 3 are welded in the two ends of this hollow tube 4 respectively, and upper end cover 2 and bottom end cover 3 adopt red processes of rushing shaping; Described red technique of rushing comprises the following steps: A, and blank, is cut into cylinder by aluminium section bar, and columniform aluminium is cut into cylinder, calculates Cutting Length according to shaping front and back volume is equal; B, heating, this pole piece is heated to 420-480 DEG C, and to reduce aluminium hardness, under this temperature conditions, extruded aluminum can eliminate internal capillary and slit, and compactness is better, is preferably 450 DEG C; C, is shaped, extruded under being placed on 600T punch press; D, preheating, is preheated to 350-400 DEG C by shaping workpiece; E, shaping, extrudes to carry out surface treatment to shaping workpiece, flat pattern surface of the work, takes out surface spikes etc.; F, cooling, naturally cools to normal temperature, obtained finished product.
Adopt and above-mentionedly redly rush the problem that end cap that upper end cover 2 that technique obtains and bottom end cover 3 solve traditional approach machine-shaping exists micropore or finedraw, there is more excellent heat conductivility.Be particularly suitable for the processing of bottom end cover 3 capillary structure 5 integrated molding, as the bottom end cover 3 of processing microneedle array capillary structure 5, effectively can improve product quality and improve working (machining) efficiency.
Further, when upper end cover 2 and bottom end cover 3 weld with radiator body 1, can friction welding (FW) be selected according to actual conditions or stir the welding procedure of weldering.Argon arc welding is existing welding procedure, and the present embodiment repeats no more.
As shown in Figure 2, upper end cover 2 and bottom end cover 3 adopt friction welding technological to weld with the hollow tube 4 of radiator body 1, upper end cover 2 and bottom end cover 3 opposite heat sink body 1 high-speed rotation, temperature arrising caused by friction is produced between the inwall of the outer rim of upper end cover 2 and bottom end cover 3 and the hollow tube 4 of radiator body 1, and make it reach hot plastic state, after its cooling, realize the solid State Welding of upper end cover 2 and bottom end cover 3 and radiator body 1.
As shown in Figure 3, upper end cover 2 and bottom end cover 3 and the hollow tube 4 of radiator body 1 adopt and stir Welding and weld, between the tube wall of the outer rim of upper end cover 2 and bottom end cover 3 and the hollow tube 4 of radiator body 1, there is gap, stir soldering tip to stretch in this gap and along this gap orbiting motion, the inwall stirring soldering tip high-speed rotation and the outer rim of upper end cover 2 and bottom end cover 3 and the hollow tube 4 of radiator body 1 produces temperature arrising caused by friction, and make it reach hot plastic state, after its cooling, realize the solid State Welding of upper end cover 2 and bottom end cover 3 and radiator body 1.
Stirring weldering or friction welding technological is adopted to substitute the argon arc welding technique of prior art, upper end cover 2 and bottom end cover 3 are welded on radiator body 1, solder joint place is connected firmly and more attractive in appearance, also makes the vacuum leakproofness of the vacuum chamber of radiator better, longer service life.
Further, upper end cover 2 and bottom end cover 3 weld with radiator body 1 and form vacuum chamber, and this vacuum chamber adopts following methods to realize, upper end cover 2 is provided with perforate, by this perforate, this vacuum chamber is vacuumized, then inject phase-change working substance to described vacuum chamber, finally with rivet, this perforate is sealed.Adopt the method to be conducive to reducing the difficulty of processing of welding sequence, improve working (machining) efficiency.
Forming step C can be that secondary extrusion is shaping, comprises shaping and extruded two steps of essence of pre-extrusion.As shown in Figure 4 and Figure 5, this upper end cover 2 is applicable to weld to stir weldering mode with radiator body 1, and a side of this upper end cover 2 is plane, and another side is provided with projection.Columned aluminium section bar is as shown in the 5-1 in Fig. 5, pre-extrusion forming step is shape as shown in the 5-2 in Fig. 5, it forms the curved surface that caves inward in the planar side of upper end cover 2, a boss is formed in projection side, the extruded step of essence is as shown in the 5-3 in Fig. 5, formed the projection of upper end cover 2 by the boss hot extrusion in 5-2, formed the planar side of upper end cover 2 by the curved surface hot extrusion caved inward in 5-2.Adopt the technique that this secondary extrusion is shaping, aluminium section bar thermoplastic deformation's uniformity in hot extrusion process can be ensured.
According to the difformity of upper end cover 2, forming step C also can be three times extruded, comprise pre-extrusion shaping, first essence extruded and second essence extruded three each and every one steps.As shown in Figure 6 and Figure 7, this upper end cover 2 is applicable to weld in friction welding (FW) mode with radiator body 1, and two sides of this upper end cover 2 are equipped with projection.Columned aluminium section bar is as shown in the 7-1 in Fig. 7, pre-extrusion forming step is shape as shown in the 7-2 in Fig. 7, it forms the curved surface that caves inward at the upper surface of upper end cover 2, a boss is formed at lower surface, first smart extruded step is as shown in the 7-3 in Fig. 7, first the projection shape of this upper end cover 2 lower surface of precise forming, the second smart extruded step is as shown in the 7-4 in Fig. 7, then the projection shape of this upper end cover 2 upper surface of precise forming.
As shown in Figure 8 and Figure 9, the upper surface of this bottom end cover 3 is provided with the capillary wick chamber be made up of microneedle array to the forming step C of bottom end cover 3, and lower surface is a plane, and secondary extrusion thus can be selected shaping.Columned aluminium section bar is as shown in the 9-1 in Fig. 9, it forms the curved surface that caves inward in the planar side of upper end cover 2, a boss is formed at opposite side, the extruded step of essence is as shown in the 9-3 in Fig. 9, formed the capillary wick chamber of upper end cover 2 by the boss hot extrusion in 9-2, form planar side by the curved surface hot extrusion caved inward in 9-2.
The above is only better embodiment of the present invention, therefore all equivalences done according to structure, feature and the principle described in patent claim of the present invention change or modify, and are included in patent claim of the present invention.
Claims (6)
1. a change-vacuum-phase change radiator manufacture method, this change-vacuum-phase change radiator comprises radiator body, upper end cover and bottom end cover, radiator body has hollow tube, phase-change working substance is equiped with in this hollow tube, upper end cover and bottom end cover are welded in the two ends of this hollow tube respectively, it is characterized in that, upper end cover and/or bottom end cover adopt red processes of rushing shaping; Described red technique of rushing comprises the following steps:
A, blank, is cut into cylinder by aluminium section bar;
B, heating, is heated to 420-480 DEG C by this pole piece;
C, is shaped, extruded;
D, preheating, is preheated to 350-400 DEG C by shaping workpiece;
E, shaping, extrudes to carry out surface treatment to shaping workpiece;
F, cooling, naturally cools to normal temperature.
2. change-vacuum-phase change radiator manufacture method according to claim 1, is characterized in that, described step C is that secondary extrusion is shaping, comprises shaping and extruded two steps of essence of pre-extrusion.
3. change-vacuum-phase change radiator manufacture method according to claim 1, is characterized in that, described step C be three times extruded, comprise pre-extrusion shaping, first essence extruded and second essence extruded three each and every one steps.
4. change-vacuum-phase change radiator manufacture method according to claim 1, it is characterized in that, upper end cover and/or bottom end cover adopt friction welding technological to weld with the hollow tube of radiator body, upper end cover and/or bottom end cover opposite heat sink body high-speed rotation, temperature arrising caused by friction is produced between the inwall of the outer rim of upper end cover and/or bottom end cover and the hollow tube of radiator body, and make it reach hot plastic state, after its cooling, realize the solid State Welding of upper end cover and/or bottom end cover and radiator body.
5. change-vacuum-phase change radiator manufacture method according to claim 1, it is characterized in that, upper end cover and/or bottom end cover and the hollow tube of radiator body adopt and stir Welding and weld, between the tube wall of the outer rim of upper end cover and/or bottom end cover and the hollow tube of radiator body, there is gap, stir soldering tip to stretch in this gap and along this gap orbiting motion, the inwall stirring soldering tip high-speed rotation and the outer rim of upper end cover and/or bottom end cover and the hollow tube of radiator body produces temperature arrising caused by friction, and make it reach hot plastic state, the solid State Welding of upper end cover and/or bottom end cover and radiator body is realized after its cooling.
6. the change-vacuum-phase change radiator manufacture method according to claim 4 or 5, it is characterized in that, upper end cover and bottom end cover weld with radiator body and form vacuum chamber, upper end cover is provided with perforate, by this perforate, this vacuum chamber is vacuumized, then inject phase-change working substance to described vacuum chamber, finally with rivet, this perforate is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510097919.1A CN104668922B (en) | 2015-03-05 | 2015-03-05 | A kind of change-vacuum-phase change radiator manufacture method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510097919.1A CN104668922B (en) | 2015-03-05 | 2015-03-05 | A kind of change-vacuum-phase change radiator manufacture method |
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| Publication Number | Publication Date |
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| CN104668922A true CN104668922A (en) | 2015-06-03 |
| CN104668922B CN104668922B (en) | 2017-07-25 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5172476A (en) * | 1991-08-14 | 1992-12-22 | General Motors Corporation | Method of manufacturing heat exchanger tubing |
| CN102114767A (en) * | 2011-01-24 | 2011-07-06 | 芜湖博锐汽车科技有限公司 | Automobile radiator integrated with air conditioning condenser |
| CN103200803A (en) * | 2013-03-20 | 2013-07-10 | 西安交通大学 | Loop heat pipe cooling device with pool boiling function |
| CN103586576A (en) * | 2013-10-12 | 2014-02-19 | 苏州嘉德鲁机电科技有限公司 | Manufacturing method of fully-enclosed phase-change radiator |
| CN203534296U (en) * | 2013-08-14 | 2014-04-09 | 奉化市垭特机电科技有限公司 | Novel LED sunflower radiator |
-
2015
- 2015-03-05 CN CN201510097919.1A patent/CN104668922B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5172476A (en) * | 1991-08-14 | 1992-12-22 | General Motors Corporation | Method of manufacturing heat exchanger tubing |
| CN102114767A (en) * | 2011-01-24 | 2011-07-06 | 芜湖博锐汽车科技有限公司 | Automobile radiator integrated with air conditioning condenser |
| CN103200803A (en) * | 2013-03-20 | 2013-07-10 | 西安交通大学 | Loop heat pipe cooling device with pool boiling function |
| CN203534296U (en) * | 2013-08-14 | 2014-04-09 | 奉化市垭特机电科技有限公司 | Novel LED sunflower radiator |
| CN103586576A (en) * | 2013-10-12 | 2014-02-19 | 苏州嘉德鲁机电科技有限公司 | Manufacturing method of fully-enclosed phase-change radiator |
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| CN104668922B (en) | 2017-07-25 |
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Effective date of registration: 20160415 Address after: 315500 Zhejiang city of Ningbo province Fenghua City Chun Hu Zhen Jie Er Cun Applicant after: NINGBO LIPINGE VACUUM PHASE-TRANSITION LIGHTING CO.,LTD. Address before: 315500 abalone Industrial Zone, Yue Lin Street, Ningbo, Zhejiang, Fenghua Applicant before: FENGHUA YANGHAI PHOTOELECTRIC SCIENCE AND TECHNOLOGY Co.,Ltd. |
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