What does pure gold A0 1 mean?

Pure gold A0 1 refers to the serial number or logo of the supplier.

The "A" in A0 1 refers to the serial number or logo of the supplier, and the "Thousand Gold" refers to the gold content with three decimal places.

Generally, there are three types of gold internal steel seals, one is gold standard, the other is manufacturer standard, and the third is brand standard. As long as it is heavy and has a formal warranty, buy gold jewelry.