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Zhengzhou b chemical co

硼酸,硼砂,化工产品,环氧树脂,氯化铵,柠檬酸,聚酰胺树脂,草酸,

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  • Contacts：zhou_qiang
  • Tel.:：68037168977668
  • Mphone：13937191668
  • Fax：68-0371-68977668
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