Feilong DU

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Shaoxing, Zhejiang, CN

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Patents Applicationslast 30 patents

Information Patent Application
Reversing Valve, and Assembly Method of Reversing Valve
- Publication number 20240183454
- Publication date Jun 6, 2024
- Zhejiang DunAn Artificial Environment Co., Ltd
- Zhongbo FENG
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Valve Core Assembly and Reversing Valve with Valve Core Assembly
- Publication number 20230358323
- Publication date Nov 9, 2023
- Zhejiang DunAn Artificial Environment Co., Ltd
- Fei ZHANG
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...