Whetstone boron carbide: carbide for hard black shiny crystals. Lower hardness than the diamond industry, but higher than the silicon carbide. Whetstone grain size between 400 to 1000, the smaller the particle size of the coarser, the greater the amount of grinding, the tool for grinding semi-finished. Because of its strong hardness itself, particularly resistant and difficult to scratch out. Dongyang jade stone factory specializing in sales of honing oil stone, a variety of specifications to meet your choice Whetstone wholesale prices, strict production process to ensure quality, honing oil stone to more precision, high efficiency new and old customers! Green silicon carbide, corundum and corundum stone hardness is not enough these three, plus a little coarse granularity, easy to grind knives draw horizontal, and the other three stone polishing, grinding will not anneal. Size greater than 1000, there is no distinction between what Whetstone procurement, mainly determined by the use of abrasive paste, and the grinding W1.5 high purpose ruby ??coated on 1000, it's the grinding effect is the effect of high abrasive W1.5 Whetstone Article wholesale manufacturers, namely 2500 grit stone effect. Dongyang jade stone factory specializing in sales of honing oil stone, a variety of specifications to meet your choice, strict production process to ensure quality, honing oil stone to more precision, high efficiency new and old customers! Whetstone wholesale prices, Anhui Whetstone, jade stone factory quality provided by the town of Dongyang Qianxiang beryl stone factory. Qianxiang Town, Dongyang beryl stone factory (www.322124.com) strong, credible, Zhejiang Jinhua Abrasives industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead greenstone Whetstone factory and you hand into the brilliant, for a better future!