挑选裸钻

Known for its remarkable hardness(nearly as hard as diamonds)and scratch resistance. Also used by a certain fruit company in some of their mini wrist computers.

定制戒托

Known for its remarkable hardness(nearly as hard as diamonds)and scratch resistance. Also used by a certain fruit company in some of their mini wrist computers.

精美成品

Known for its remarkable hardness(nearly as hard as diamonds)and scratch resistance. Also used by a certain fruit company in some of their mini wrist computers.