CN114194552A - Improved PCB horizontal line transfer tray and preparation process thereof - Google Patents
Improved PCB horizontal line transfer tray and preparation process thereof Download PDFInfo
- Publication number
- CN114194552A CN114194552A CN202111609325.6A CN202111609325A CN114194552A CN 114194552 A CN114194552 A CN 114194552A CN 202111609325 A CN202111609325 A CN 202111609325A CN 114194552 A CN114194552 A CN 114194552A
- Authority
- CN
- China
- Prior art keywords
- pcb
- tray
- frame
- horizontal line
- preparation process
- 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
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000006260 foam Substances 0.000 claims abstract description 18
- 239000002245 particle Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 238000005187 foaming Methods 0.000 claims abstract description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000009941 weaving Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000002390 adhesive tape Substances 0.000 abstract description 2
- 239000003814 drug Substances 0.000 abstract description 2
- 150000003071 polychlorinated biphenyls Chemical class 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/34—Trays or like shallow containers
- B65D1/36—Trays or like shallow containers with moulded compartments or partitions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3415—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/35—Component parts; Details or accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/40—Details of walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2585/00—Containers, packaging elements or packages specially adapted for particular articles or materials
- B65D2585/68—Containers, packaging elements or packages specially adapted for particular articles or materials for machines, engines, or vehicles in assembled or dismantled form
- B65D2585/86—Containers, packaging elements or packages specially adapted for particular articles or materials for machines, engines, or vehicles in assembled or dismantled form for electrical components
Abstract
The invention discloses an improved PCB horizontal line transfer pallet and a preparation process thereof, and relates to the field of transfer pallets, the improved PCB horizontal line transfer pallet comprises a pallet frame, the inner wall of the pallet frame is fixedly connected with a bearing frame, the inner wall of the pallet frame and the surface of the bearing frame are jointly provided with a plurality of blind grooves, the pallet preparation process comprises the steps of pre-foaming and curing PCB particles, and then filling the PCB particles into a forming die cavity of which a pre-opening die joint is not completely closed, the strong length of a forming die is 84.50mm, and the strong width of the forming die is 45.70mm, so that the PCB foam pallet frame and the bearing frame are prepared. According to the invention, the ultra-small PCB horizontal line transfer tray device is adopted, the tray is provided with the blind groove, the small PCB can be smoothly clamped in the blind groove to be transferred and pass through the horizontal line, the phenomenon that the PCB is affected by the dropping of the equipment clamping plate and the pollution of the liquid medicine caused by the sticking of the adhesive tape on the PCB can be avoided, the production benefit is improved, the tray can be operated by one person and can be reused, and the follow-up horizontal line passing of all ultra-small PCBs is convenient.
Description
Technical Field
The invention relates to the field of transfer trays, in particular to an improved horizontal transfer tray for a PCB and a preparation process thereof.
Background
Pallets are vehicles that transform static goods into dynamic goods, a cargo platform, but also a movable platform, or movable ground. Even if the goods are put on the ground without flexibility, the mobility is immediately obtained once the pallets are loaded, and the goods become flexible and mobile goods, because the goods loaded on the pallets, the dynamic loading and unloading method using the pallet as the basic tool is called pallet operation at any time in a preparation state of being capable of being turned into motion, the pallet operation not only can obviously improve the loading and unloading effect, but also can be implemented to change the form of warehouse buildings, the structure of ships, the loading and unloading facilities of railways and other transportation modes and management organizations, in the aspect of goods packaging, the packaging standardization and modularization are promoted, even the common production activities except loading and unloading can be obviously influenced, and as production equipment is more and more precise and the automation degree is higher and higher, the production planning is stronger and more, and the management mode is gradually advanced, the inter-process transportation and the work of supplying materials and semi-finished products to a production line become more and more important.
The existing horizontal line shifting tray is generally large in volume during production, production is very inconvenient due to the large volume in the production process, production efficiency is low, and the operation of using the horizontal line shifting tray is very difficult to control.
Summary of the invention
The invention aims to provide an improved horizontal transferring tray for a PCB (printed circuit board) and a preparation process thereof, and aims to solve the problems that the horizontal transferring tray provided by the background art is generally large in volume during production, is inconvenient to produce due to the large volume during the production process, is low in production efficiency, and is very difficult to control during operation by using the horizontal transferring tray.
In order to achieve the purpose, the invention provides the following technical scheme: the improved horizontal line transferring tray for the PCB comprises a tray frame, wherein a bearing frame is fixedly connected to the inner wall of the tray frame, and a plurality of blind grooves are formed in the inner wall of the tray frame and the surface of the bearing frame.
Preferably, the carrier is composed of a plurality of transverse panels and a plurality of longitudinal panels.
Preferably, the upper surface and the lower surface of the inner wall of the tray frame are fixedly connected with dust screens.
An improved PCB horizontal line transfer pallet preparation process is characterized in that PCB particles are pre-foamed and cured, and then filled into a forming mold cavity of which a pre-opening mold seam is not completely closed, the strength and the length of a forming mold are 84.50mm, the strength and the width of the forming mold are 45.70mm, and a PCB foam pallet frame and a bearing frame are prepared;
plasticizing the bottom surfaces and the side surfaces of the PCB foam tray frame and the bearing frame to form a PCB plasticized layer, and heating and attaching a PB film to the upper surface of the PCB foam board body to obtain a tray with high bearing capacity;
the tray is characterized in that an aluminum alloy steel wire with the diameter of 0.05mm and a waterproof sand net are selected after the tray is manufactured, then the aluminum alloy steel wire is woven into a net, and the net formed by weaving the aluminum alloy and the waterproof sand net are embedded inside an aluminum frame by using the aluminum frame to form a dustproof net.
Preferably, the subsequent processing is to perform slotting treatment on the peripheries of the upper side and the lower side of the inner wall of the manufactured tray, and polish the inner wall of the tray after slotting.
Preferably, after the polishing treatment is completed, the dustproof net is inserted into the opened groove, the waterproof glue is used for fixing the dustproof net and the inside of the groove, and after the waterproof glue is used, the inside of the tray is dried by a dryer.
Preferably, the plasticizing treatment of the PCB foam tray frame and the bearing frame is to heat a female die to 160-220 ℃, so that PCB foam particles on the bottom surface and the side surface of the PCB foam tray frame are molten to be in a fluid state to form a fluid layer, the female die gradually moves towards a male die until the die is closed while the PCB particles are molten, the female die is rapidly cooled after the die is closed, and the liquid PCB of the fluid layer is condensed and hardened to obtain the PCB plasticized layer.
The invention has the technical effects and advantages that: according to the invention, the ultra-small PCB horizontal line transfer tray device is adopted, the tray is provided with the blind groove, the small PCB can be smoothly clamped in the blind groove to be transferred and pass through the horizontal line, the phenomenon that the PCB is affected by the dropping of the equipment clamping plate and the pollution of the liquid medicine caused by the sticking of the adhesive tape on the PCB can be avoided, the production benefit is improved, the tray can be operated by one person and can be reused, and the follow-up horizontal line passing of all ultra-small PCBs is convenient.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic front sectional view of the present invention.
In the figure: 1. a tray frame; 2. a carrier; 3. a transverse plate; 4. a longitudinal plate; 5. a dust screen.
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 first embodiment is as follows:
the preparation process of the tray comprises the steps of pre-foaming and curing PCB particles, then filling the PCB particles into a forming mold cavity of which a pre-opening mold closing seam is not completely closed, wherein the strong length of a forming mold is 84.50mm, the strong width of the forming mold is 45.70mm, preparing a PCB foam tray frame 1 and a bearing frame 2, plasticizing the bottom surfaces and the side surfaces of the PCB foam tray frame 1 and the bearing frame 2, heating a concave mold to 160-220 ℃ to melt the PCB foam particles on the bottom surface and the side surfaces of the PCB foam tray frame into a fluid state to form a fluid layer, gradually moving the concave mold to a convex mold until the mold closing is carried out while the PCB particles are melted, and rapidly cooling the concave mold after the mold closing to condense and harden the liquid PCB of the fluid layer so as to obtain the PCB plasticized layer;
form the PCB plastify layer, then with the attached upper surface to the PCB cystosepiment body of PB membrane heating, can make the tray that has high bearing capacity, select 0.05mm diameter's aluminum alloy steel wire and waterproof sand net after the tray preparation is accomplished, then weave the aluminium alloy steel wire into the net, the net that forms is woven with the aluminum alloy again and waterproof sand net inlays inside the aluminium frame to use the aluminium frame, form dust screen 5, subsequent processing is that the fluting is handled in both sides about the tray inner wall of preparation completion, the processing of polishing is carried out to the inner wall of tray after the fluting is accomplished, it is inside to insert the fluting of seting with dust screen 5 after the processing of polishing is accomplished, reuse waterproof glue to fix dust screen 5 with fluting inside, use the drying machine to carry out drying process to the tray inside behind the waterproof glue.
The second embodiment is as follows:
as shown in figures 1 and 2, the bearing frame 2 formed by the transverse plate 3 and the longitudinal plate 4 in the tray supports the whole tray frame 1 when in use, then the flat card of the small-size PCB is clamped in the blind groove to move and carry through a horizontal line, then the tray can be used for operation, the dustproof net 5 on the surface can separate the water flow outside during operation, and the inside corrosion of the tray caused by the entering of the blind groove and the tray is prevented.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides an improved generation PCB board water flat line moves carries tray, includes tray frame (1), its characterized in that: the inner wall of the tray frame (1) is fixedly connected with a bearing frame (2), and a plurality of blind grooves are formed in the inner wall of the tray frame and the surface of the bearing frame (2) together.
2. The improved horizontal transfer tray for PCB boards as claimed in claim 1, wherein: the bearing frame (2) is jointly composed of a plurality of transverse panels (3) and a plurality of longitudinal panels (4).
3. The improved horizontal transfer tray for PCB boards as claimed in claim 1, wherein: the upper surface and the lower surface of the inner wall of the tray frame are fixedly connected with dust screens (5).
4. The improved PCB horizontal line transfer tray preparation process is characterized in that: the preparation process of the tray comprises the steps of pre-foaming and curing PCB particles, then filling the PCB particles into a forming mold cavity of which a pre-opening mold closing seam is not completely closed, wherein the strength length of a forming mold is 84.50mm, the strength width of the forming mold is 45.70mm, and preparing a PCB foam tray frame (1) and a bearing frame (2);
plasticizing the bottom surfaces and the side surfaces of the PCB foam tray frame (1) and the bearing frame (2) to form a PCB plasticized layer, and heating and attaching a PB film to the upper surface of the PCB foam board body to obtain a tray with high bearing capacity;
the tray is characterized in that an aluminum alloy steel wire with the diameter of 0.05mm and a waterproof sand net are selected after the tray is manufactured, then the aluminum alloy steel wire is woven into a net, and the net formed by weaving the aluminum alloy and the waterproof sand net are embedded inside an aluminum frame by using the aluminum frame to form a dustproof net (5).
5. The improved PCB horizontal line shifting tray preparation process of claim 4, wherein the horizontal line shifting tray preparation process comprises the following steps: and the subsequent processing is to perform slotting treatment on the peripheries of the upper side and the lower side of the inner wall of the manufactured tray, and polish the inner wall of the tray after slotting.
6. The improved PCB horizontal line shifting tray preparation process of claim 5, wherein the horizontal line shifting tray preparation process comprises the following steps: after polishing, the dustproof net (5) is inserted into the opened groove, waterproof glue is used for fixing the dustproof net (5) and the inside of the groove, and after the waterproof glue is used, a dryer is used for drying the inside of the tray.
7. The improved PCB horizontal line shifting tray preparation process of claim 4, wherein the horizontal line shifting tray preparation process comprises the following steps: the plasticizing treatment of the PCB foam tray frame (1) and the bearing frame (2) is that a female die is heated to 160-220 ℃, so that PCB foam particles on the bottom surface and the side surface of the PCB foam tray frame are molten to be in a fluid state to form a fluid layer, the female die gradually moves towards a male die while the PCB foam particles are molten until the die is closed, the female die is rapidly cooled after the die is closed, and the liquid PCB of the fluid layer is condensed and hardened to obtain the PCB plasticized layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111609325.6A CN114194552A (en) | 2021-12-27 | 2021-12-27 | Improved PCB horizontal line transfer tray and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111609325.6A CN114194552A (en) | 2021-12-27 | 2021-12-27 | Improved PCB horizontal line transfer tray and preparation process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114194552A true CN114194552A (en) | 2022-03-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111609325.6A Pending CN114194552A (en) | 2021-12-27 | 2021-12-27 | Improved PCB horizontal line transfer tray and preparation process thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN114194552A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001315778A (en) * | 2000-05-02 | 2001-11-13 | Nippon Plapallet Co | Synthetic resin pallet |
| CN201903145U (en) * | 2010-12-28 | 2011-07-20 | 广州精益汽车空调有限公司 | Ventilation shutter blind for air-conditioner |
| CN205327857U (en) * | 2016-01-13 | 2016-06-22 | 三进光电（苏州）有限公司 | A turnover case for fixing printed circuit board |
| CN206144437U (en) * | 2016-11-04 | 2017-05-03 | 王荣锋 | Screen window section bar and window |
| CN206838722U (en) * | 2017-04-26 | 2018-01-05 | 四川省华兴宇电子科技有限公司 | A kind of printed circuit finished product cleans servicing unit |
| CN208233617U (en) * | 2018-05-09 | 2018-12-14 | 天津市威龙塑胶制品有限公司 | It is a kind of for holding the plastic pallet of egg |
| CN208531079U (en) * | 2018-05-09 | 2019-02-22 | 深圳市星河电路股份有限公司 | A kind of small size ceramics pcb board Special support plate device |
| CN208572581U (en) * | 2018-07-13 | 2019-03-01 | 苏州市吴通智能电子有限公司 | A kind of small parts pallet applied to SMT attachment line |
| CN109676949A (en) * | 2019-01-10 | 2019-04-26 | 四川力登维汽车部件有限公司 | The preparation method of pallet with high bearing capacity |
| CN209824144U (en) * | 2018-12-24 | 2019-12-20 | 上海铁路通信有限公司 | High-temperature-resistant hanging type printed board baking device |
| CN212467472U (en) * | 2020-05-20 | 2021-02-05 | 惠州市旭辉塑胶科技有限公司 | Polymer plastic dust screen |
| CN214220834U (en) * | 2020-10-13 | 2021-09-17 | 李荣知 | Road construction protection network for municipal works |
-
2021
- 2021-12-27 CN CN202111609325.6A patent/CN114194552A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001315778A (en) * | 2000-05-02 | 2001-11-13 | Nippon Plapallet Co | Synthetic resin pallet |
| CN201903145U (en) * | 2010-12-28 | 2011-07-20 | 广州精益汽车空调有限公司 | Ventilation shutter blind for air-conditioner |
| CN205327857U (en) * | 2016-01-13 | 2016-06-22 | 三进光电（苏州）有限公司 | A turnover case for fixing printed circuit board |
| CN206144437U (en) * | 2016-11-04 | 2017-05-03 | 王荣锋 | Screen window section bar and window |
| CN206838722U (en) * | 2017-04-26 | 2018-01-05 | 四川省华兴宇电子科技有限公司 | A kind of printed circuit finished product cleans servicing unit |
| CN208233617U (en) * | 2018-05-09 | 2018-12-14 | 天津市威龙塑胶制品有限公司 | It is a kind of for holding the plastic pallet of egg |
| CN208531079U (en) * | 2018-05-09 | 2019-02-22 | 深圳市星河电路股份有限公司 | A kind of small size ceramics pcb board Special support plate device |
| CN208572581U (en) * | 2018-07-13 | 2019-03-01 | 苏州市吴通智能电子有限公司 | A kind of small parts pallet applied to SMT attachment line |
| CN209824144U (en) * | 2018-12-24 | 2019-12-20 | 上海铁路通信有限公司 | High-temperature-resistant hanging type printed board baking device |
| CN109676949A (en) * | 2019-01-10 | 2019-04-26 | 四川力登维汽车部件有限公司 | The preparation method of pallet with high bearing capacity |
| CN212467472U (en) * | 2020-05-20 | 2021-02-05 | 惠州市旭辉塑胶科技有限公司 | Polymer plastic dust screen |
| CN214220834U (en) * | 2020-10-13 | 2021-09-17 | 李荣知 | Road construction protection network for municipal works |
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Effective date of registration: 20231116 Address after: No. 999 Yinzhong South Road, Wuzhong Economic Development Zone, Suzhou City, Jiangsu Province, 215000 Applicant after: Yuehu Crystal Core Circuit (Suzhou) Co.,Ltd. Address before: 215124 Yanlong sub district office, Yandu District, Yancheng City, Jiangsu Province Applicant before: Yuehu crystal core circuit (Yancheng) Co.,Ltd. |