Recently, relevant departments held in Beijing.

The meeting was revised at the meeting of the national standard for purity and naming method. The national standard was revised and revised.

The author learned from the Dalian jewelry and Jade Association that the main content of this revision is to adjust the purity range of precious metals and their alloys. The purity and naming of thousands of pure gold have been eliminated, and some enterprises have called for the indication that the purity of gold is not accepted.

At present, the association has sent notice to all member units to request that the new regulations be implemented from now on.

It is understood that the revised national standard stipulates that the highest gold purity of gold jewelry is after full gold.

If the content is greater than or equal to 990 per thousand, gold jewelry manufacturers can produce full gold with a gold content of 990 per thousand according to market demand, with a gold content of 999 per thousand or a gold content of 999.9 per thousand.

That is to say, gb11887 stipulates the scope of purity, and the content of gold is not specified, and the product is developed by enterprises according to the market.

It is more specific. When enterprises publicize the purity of gold jewelry, there will be no more than 1000 gold or ten thousand gold. It is possible to have a gold content of 999 per thousand AU999 or a gold content of 999.9 per thousand (au999.9). It may also be advertised as au990, AU999, au999.9, or full gold (other alloys not exceeding 1.1 per thousand), gold (other alloys not exceeding 1 per thousand), and full gold (other alloys not exceeding 0.1 per thousand).

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