Shitang Tong

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Wuhan, Hubei, CN

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Patents Grantslast 30 patents

Information Patent Grant
Process for the production of alpha hemihydrate calcium sulfate fro...
- Patent number 5,562,892
- Issue date Oct 8, 1996
- Donald W. Kirk
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES