China National Standards

China 指环尺寸 GB Standards List

  •  China "指环尺寸" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 11888-2021 首饰 指环尺寸 定义、测量和命名
    首饰 指环尺寸 定义、测量和命名    		 China National Standards
    指环尺寸
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