Certificates

  • China Shijiazhuang Zhongtai Pipe Technology Development Co., Ltd certification
    GB/T19001:2016/ISO9001:2015
  • China Shijiazhuang Zhongtai Pipe Technology Development Co., Ltd certification
    EN ISO 12100:2010,EN ISO 13857, EN 349+A1,EN 60204-1/A1
  • China Shijiazhuang Zhongtai Pipe Technology Development Co., Ltd certification
    Gold Plus Supplier
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