您要查找的是不是：
- alloy 20Cb-3是美國木工技術(shù)公司的注冊商標。aLLOY 20Cb-3 is a registered trademark of Carpenter Technology.
- 其它：袖扣背面有titanium字樣，保證真鈦金屬和進(jìn)口鋼材精制而成。Others:" TITANIUM" marking on the back of the cufflink. Made from100%25 genuine titanium and high end stainless steel.
