China National Standards

China 21：Basic GB Standards List

  •  China "21：Basic" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 7424.21-2021 Optical fibre cable generic specification—Part 21：Basic optical cable test procedures—Mechanical test methods
    光缆总规范 第21部分：光缆基本试验方法 机械性能试验方法    		 China National Standards
    21：Basic
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