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Tianjin Kai Shun chemical industry limited

色谱纯试剂,分析纯试剂,精细化学品,标准溶液,高纯试剂,优级纯试剂,基准试剂,色标试...

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  • Contacts:liu_yang
  • Tel.::02226443733
  • Fax:86-022-26443733
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