The surface is brick red nonflammable coating and indicate a white ring at the behind of the precision color ring.
涂漆颜色为砖红色不燃性面漆，精度色环后增加白色环表示。
The rasp Ring made of stainless steel with a partial sapphire rasp coating.
挫刀戒指用不锈钢制成，部分覆以蓝宝石涂层。
The outer surface of the bracelet ring is coated by gold, silver and decorative coating. The connecting device can adopt a spring or a snap buckle sheet.
手镯环为中空环形结构，采用硬塑或轻金属，外表面镀（涂）金、银及装饰涂料。
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