China National Standards

China Jewelry jade identification GB Standards List

  •  China "Jewelry jade identification" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 42433-2023 Jewelry jade identification infrared spectroscopy {译}
    珠宝玉石鉴定 红外光谱法    		 China National Standards
    Jewelry jade identification
    English PDF
    GB/T 42645-2023 Identification of Jewelry and Jade-Ultraviolet-Visible Absorption Spectroscopy {译}
    珠宝玉石鉴定 紫外-可见吸收光谱法    		 China National Standards
    Jewelry jade identification
    English PDF

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