Kai Zeng

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Shangyu, CN

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Patents Grantslast 30 patents

Information Patent Grant
Pre-tensioned centrifugal concrete structure with steel strands
- Patent number 9,783,987
- Issue date Oct 10, 2017
- Gang Gan
- B28 - WORKING CEMENT, CLAY, OR STONE

Patents Applicationslast 30 patents

Information Patent Application
Pre-Tensioned Centrifugal Concrete Pile Provided with Steel Strand...
- Publication number 20160333583
- Publication date Nov 17, 2016
- Gang Gan
- E04 - BUILDING