China National Standards

China Hearts Industry Standards English PDF List


  •  China "Hearts" Industry Standards English PDF List:
  • Standard  Code Standard Title Standard Class Order
    DZ/T 0414—2022 Diamond Hearts and Arrows Effect Testing and Grading {译}
    钻石八心八箭效应 测试与分级
    China Geology & Mineralogy Industry Standards
    Hearts

    English PDF

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