There is a t and a b in the middle of the trademark.

1.pt900 represents the platinum content.

The white luster of platinum is natural and unchangeable for a long time, while the color of platinum is unnatural and may fade after a long time. Pt is the unique symbol of chemical elements in platinum, and platinum cannot be marked with Pt, the unique symbol of platinum.

According to the regulations of the State Bureau of Technical Supervision, all platinum ornaments produced in China must be marked with the exclusive logo of Pt platinum, and the common words "Pt900" or "Pt950" represent 90% and 95% of the platinum content in the materials respectively.

2.BOT stands for ring manufacturer.

3. D0.3 1 t represents the total amount of main drilling, 0.31min.

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