您要查找的是不是：
- alloy 20Cb-3是美国木工技术公司的注册商标。aLLOY 20Cb-3 is a registered trademark of Carpenter Technology.
- 其它：袖扣背面有titanium字样，保证真钛金属和进口钢材精制而成。Others:" TITANIUM" marking on the back of the cufflink. Made from100%25 genuine titanium and high end stainless steel.
