SINO INSTITUTE OF PRECISE TUBES INDUSTRY (GUANGZHOU) CO. LTD

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GUANGZHOU, CN

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Patents Grantslast 30 patents

Information Patent Grant
Hot and cold composite formed square and rectangular steel tube wit...
- Patent number 11,618,066
- Issue date Apr 4, 2023
- Sino Institute of Precise Tubes Industry (Guangzhou) Co., Ltd.
- Jingtao Han
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...