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No Logo | Beijing Yangcun Chemical Co., Ltd Beijing Yangcun Chemical Co., Ltd. has the strong ability of developing the new products with technical instruction of its two American returned chemical doctors. The company could guarantee the quality of its products by supporting with scientif... We are regularly Selling: optical brighteners, p-carboxybenzaldehyde, 4-hydroxy tempo, cas no 464-72-2, cas: 97-30-3, cas no : 131-54-4. Member since 26 October, 2006, China - Beijing | | | No Logo | Dalian Research and Design Institute of Chemical Industry We are regularly Selling: ultraviolet absorbent uv 1577, ultraviolet absorbent uv 1164, optical brightener ob, optical brightener ob-1, optical brightener cbs-x, optical brightener, antioxidant md 1024, 4-hydroxy tempo, ultraviolet absorbent bp 12. Member since 26 July, 2012, China - Liaoning | | |
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