CN113629045B - 三相逆变功率模块的增材制造工艺 - Google Patents
三相逆变功率模块的增材制造工艺 Download PDFInfo
- Publication number
- CN113629045B CN113629045B CN202110903745.9A CN202110903745A CN113629045B CN 113629045 B CN113629045 B CN 113629045B CN 202110903745 A CN202110903745 A CN 202110903745A CN 113629045 B CN113629045 B CN 113629045B
- Authority
- CN
- China
- Prior art keywords
- copper
- aluminum nitride
- nitride ceramic
- chip
- printing
- 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.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 title abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 120
- 229910052802 copper Inorganic materials 0.000 claims abstract description 120
- 239000010949 copper Substances 0.000 claims abstract description 120
- 239000000919 ceramic Substances 0.000 claims abstract description 72
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims abstract description 61
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 23
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000654 additive Substances 0.000 claims abstract description 5
- 230000000996 additive effect Effects 0.000 claims abstract description 5
- 238000010146 3D printing Methods 0.000 claims description 22
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 14
- 239000000853 adhesive Substances 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000000565 sealant Substances 0.000 claims description 8
- 238000005476 soldering Methods 0.000 claims description 8
- 238000010273 cold forging Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000004382 potting Methods 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 18
- 238000004806 packaging method and process Methods 0.000 abstract description 12
- 239000000758 substrate Substances 0.000 abstract description 9
- 230000005855 radiation Effects 0.000 abstract 2
- 239000010410 layer Substances 0.000 description 57
- 239000012790 adhesive layer Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005457 optimization Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of semiconductor or other solid state devices
- H01L25/03—Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/07—Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group subclass H10D
- H01L25/072—Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group subclass H10D the devices being arranged next to each other
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the groups H01L21/18 - H01L21/326 or H10D48/04 - H10D48/07 e.g. sealing of a cap to a base of a container
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/02—Containers; Seals
- H01L23/04—Containers; Seals characterised by the shape of the container or parts, e.g. caps, walls
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/02—Containers; Seals
- H01L23/06—Containers; Seals characterised by the material of the container or its electrical properties
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/367—Cooling facilitated by shape of device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/367—Cooling facilitated by shape of device
- H01L23/3672—Foil-like cooling fins or heat sinks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/373—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/373—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon
- H01L23/3731—Ceramic materials or glass
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/373—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon
- H01L23/3736—Metallic materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
- H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
- H02M7/53875—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current with analogue control of three-phase output
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Inverter Devices (AREA)
Abstract
Description
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110903745.9A CN113629045B (zh) | 2021-08-06 | 2021-08-06 | 三相逆变功率模块的增材制造工艺 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110903745.9A CN113629045B (zh) | 2021-08-06 | 2021-08-06 | 三相逆变功率模块的增材制造工艺 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN113629045A CN113629045A (zh) | 2021-11-09 |
CN113629045B true CN113629045B (zh) | 2023-03-10 |
Family
ID=78383272
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202110903745.9A Active CN113629045B (zh) | 2021-08-06 | 2021-08-06 | 三相逆变功率模块的增材制造工艺 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN113629045B (zh) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117238901B (zh) * | 2023-11-16 | 2024-03-08 | 西安西电电力系统有限公司 | 压接式igbt结构及功率组件 |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101188224A (zh) * | 2007-10-12 | 2008-05-28 | 上海大学 | 高散热多芯片集成大功率白光发光二极管模块及其制备方法 |
JP2009177038A (ja) * | 2008-01-28 | 2009-08-06 | Hitachi Ltd | パワー半導体モジュール |
CN106449402A (zh) * | 2016-11-22 | 2017-02-22 | 南通沃特光电科技有限公司 | 一种具体石墨烯散热结构的功率器件的制造方法 |
CN106997871A (zh) * | 2016-12-23 | 2017-08-01 | 杨杰 | 一种功率模块的封装结构 |
CN109887909A (zh) * | 2019-03-13 | 2019-06-14 | 黄山学院 | 基于石墨烯的ipm混合模块封装结构及加工工艺 |
CN110854103A (zh) * | 2019-11-09 | 2020-02-28 | 北京工业大学 | 一种嵌入式双面互连功率模块封装结构和制作方法 |
CN111261599A (zh) * | 2020-03-11 | 2020-06-09 | 黄山学院 | 基于石墨烯基封装衬板的大功率ipm的结构及加工工艺 |
WO2020159031A1 (ko) * | 2019-01-28 | 2020-08-06 | 이민희 | 전력 반도체 모듈 패키지 및 이의 제조방법 |
CN213184342U (zh) * | 2020-06-24 | 2021-05-11 | 东莞中之光电股份有限公司 | 一种陶瓷面led灯封装结构 |
CN113130455A (zh) * | 2021-04-20 | 2021-07-16 | 黄山学院 | 一种高热可靠性的多单元功率集成模块及其加工工艺 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007234690A (ja) * | 2006-02-28 | 2007-09-13 | Hitachi Ltd | パワー半導体モジュール |
-
2021
- 2021-08-06 CN CN202110903745.9A patent/CN113629045B/zh active Active
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101188224A (zh) * | 2007-10-12 | 2008-05-28 | 上海大学 | 高散热多芯片集成大功率白光发光二极管模块及其制备方法 |
JP2009177038A (ja) * | 2008-01-28 | 2009-08-06 | Hitachi Ltd | パワー半導体モジュール |
CN106449402A (zh) * | 2016-11-22 | 2017-02-22 | 南通沃特光电科技有限公司 | 一种具体石墨烯散热结构的功率器件的制造方法 |
CN106997871A (zh) * | 2016-12-23 | 2017-08-01 | 杨杰 | 一种功率模块的封装结构 |
WO2020159031A1 (ko) * | 2019-01-28 | 2020-08-06 | 이민희 | 전력 반도체 모듈 패키지 및 이의 제조방법 |
CN109887909A (zh) * | 2019-03-13 | 2019-06-14 | 黄山学院 | 基于石墨烯的ipm混合模块封装结构及加工工艺 |
CN110854103A (zh) * | 2019-11-09 | 2020-02-28 | 北京工业大学 | 一种嵌入式双面互连功率模块封装结构和制作方法 |
CN111261599A (zh) * | 2020-03-11 | 2020-06-09 | 黄山学院 | 基于石墨烯基封装衬板的大功率ipm的结构及加工工艺 |
CN213184342U (zh) * | 2020-06-24 | 2021-05-11 | 东莞中之光电股份有限公司 | 一种陶瓷面led灯封装结构 |
CN113130455A (zh) * | 2021-04-20 | 2021-07-16 | 黄山学院 | 一种高热可靠性的多单元功率集成模块及其加工工艺 |
Also Published As
Publication number | Publication date |
---|---|
CN113629045A (zh) | 2021-11-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107170714B (zh) | 一种低寄生电感功率模块及双面散热低寄生电感功率模块 | |
CN110838480B (zh) | 一种碳化硅mosfet模块的封装结构和制作方法 | |
KR101836658B1 (ko) | 파워 모듈 및 그 제조 방법 | |
CN104170086B (zh) | 半导体装置及半导体装置的制造方法 | |
CN106206483B (zh) | 电源模块 | |
CN110854103B (zh) | 一种嵌入式双面互连功率模块封装结构和制作方法 | |
CN109887909B (zh) | 基于石墨烯的ipm混合模块封装结构及加工工艺 | |
CN106208623B (zh) | 电源模块 | |
CN109817591B (zh) | 一种高功率密度igbt模块的双面水冷散热结构及加工工艺 | |
CN113130455B (zh) | 一种高热可靠性的多单元功率集成模块及其加工工艺 | |
CN111261599B (zh) | 基于石墨烯基封装衬板的大功率ipm的结构及加工工艺 | |
CN105161467A (zh) | 一种用于电动汽车的功率模块 | |
CN113629045B (zh) | 三相逆变功率模块的增材制造工艺 | |
CN114334869B (zh) | 一种自动温度控制的igbt模块封装结构 | |
CN106298724A (zh) | 塑封型功率模块 | |
CN110867415A (zh) | 一种立体集成整流阵列及其制作方法 | |
CN103413797B (zh) | 一种三维结构单元组装的功率半导体模块 | |
CN118522699A (zh) | 一种高功率密度高散热性的dbc基板及功率模块 | |
CN207977311U (zh) | 高可靠性igbt模块的封装结构 | |
CN215644461U (zh) | 一种功率模块及电子设备 | |
CN101594067B (zh) | 混合动力汽车双面冷却平面高温逆变器 | |
JP2012238737A (ja) | 半導体モジュール及びその製造方法 | |
CN113764386A (zh) | 多单元功率集成模块的低寄生叠装结构及封装工艺 | |
CN114628375A (zh) | 一种压接式半导体子模组及模块 | |
CN221149993U (zh) | 半导体封装和供电模块 |
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 | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20220630 Address after: 245061 No. 10, Wenfeng West Road, Huizhou District, Huangshan City, Anhui Province Applicant after: GOOGE THERMAL COOLING TECHNOLOGY CO.,LTD. Address before: 245061 No. 10, Wenfeng West Road, Chengbei Industrial Park, Huizhou District, Huangshan City, Anhui Province Applicant before: GOOGE THERMAL COOLING TECHNOLOGY CO.,LTD. Applicant before: Huangshan University |
|
TA01 | Transfer of patent application right | ||
CB02 | Change of applicant information |
Address after: 245061 No. 10, Wenfeng West Road, Huizhou District, Huangshan City, Anhui Province Applicant after: Huangshan Gujie Co.,Ltd. Address before: 245061 No. 10, Wenfeng West Road, Huizhou District, Huangshan City, Anhui Province Applicant before: GOOGE THERMAL COOLING TECHNOLOGY CO.,LTD. |
|
CB02 | Change of applicant information | ||
GR01 | Patent grant | ||
GR01 | Patent grant |