The size standards for rings in China include mainland and Hong Kong versions, which need to be selected based on the comparison table used by the store.
Mainland version ring size comparison chart
According to the table below, the circumference of the mainland version corresponding to ring No. 7 is 47mm and the diameter is 15mm.
Hong Kong Ring Size Comparison Table
As shown in the table below, 7
The circumference of the European version corresponding to the number ring
