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        6. Hello, welcome to the official website of Jieao Building Materials Co., LTD!
          US
          描述
          400-0110-188
          National Toll-free service hotline
          High performance hardware precision metal parts
          Creat the safest fire protection hardware system in China
          描述
          Committed to the research and development of industrial bearings
          First-class production process and perfect testing equipment

          Special fireproof hardware system for Jieao steel U-slot hanging window

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