... cost, durability, high efficiency Electroplated Diamond Sharpening Whetstone, mainly used for sharpening metal, gardening toolds and all household ... & Trading Co, Ltd, specializes in manufacturing Diamond Knife Sharpener, Diamond Mesh Sharpener, Electroplated Diamond Saw Blades, ... , Grinding Wheels etc. which are mainly used in stone and construction industries, such as marble, granite, sandstone ...