On April 27th, the National Jewelry and Jade Standardization Technical Committee organized an expert meeting in Zhengzhou to review and pass the national standard of Dushanyu.
The national standard of Dushanyu was led by the Department of Land and Resources of Henan Province. The Provincial Geological Museum, the Provincial Jewelry and Jewelry Industry Association, and the Nanyang Municipal Bureau of Land and Resources jointly drafted.
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The expert review committee believes that the Dushan jade national standard has established a scientific and standardized, reasonable and feasible, and highly operational classification system. With the Dushan jade color as the main line, the classification standard of Dushan jade has been established, and different types of independence have been given. The identification characteristics of Shanyu filled the blank of the national standard of Dushan jade classification and its identification. The review committee unanimously passed the review of the national standard of Dushanyu, and recommended that it be revised and improved according to the opinions and suggestions put forward by the review as soon as possible, and submitted for approval in accordance with the national standard setting procedure, and issued early.
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