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Beijing Haotian oxygen cylinder Trade Center

高纯气体,高纯氢气,高纯氧气,压缩气体,液化气体,二氧化碳,乙炔,甲烷,各种大小标准...

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  • Contacts:li_qiao_ming
  • Tel.::01060570213
  • Mphone:13911291332
  • Fax:86-010-60570213
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