There are generally two sizes of rings in China: the mainland version and the Hong Kong version. It is necessary to know in advance which size chart is used for the purchased ring.
Mainland version ring size comparison chart
According to the table below, the circumference of the mainland version of the No. 15 ring is 55mm and the diameter is 17.5mm.
Hong Kong Ring Size Comparison Table
As shown in the table below, the port
edition
The circumference of ring 15 is 56.5mm and the diameter is 18.0mm.
