Guolong MA

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Qingdao, CN

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Patents Applicationslast 30 patents

Information Patent Application
WELDING DEVICE FOR SUPPRESSING WELDING HOT CRACKS, AND WELDING SYSTEM
- Publication number 20240316681
- Publication date Sep 26, 2024
- CRRC QINGDAO SIFANG CO., LTD.
- Xiaohui HAN
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
LASER STITCH WELDING DEVICE AND WELDING METHOD THEREFOR
- Publication number 20220274201
- Publication date Sep 1, 2022
- CRRC QINGDAO SIFANG CO., LTD.
- Xiaohui HAN
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR