The density of the emery, the hardness is great. After grinding, can be used for grinding powder, can be made of polished paper, but also grinding wheel and the friction surface of the stone. From the sand and the amount of carbon in the electric furnace to strengthen the heat obtained.

Natural emery also known as garnet, silicate minerals. After the hydraulic sorting, machining, screening grading and other methods made of grinding materials. Production has a long history of use, the ancient China has a diamond grinding glass, a variety of jade examples. The nineteenth century and the 1940s and exported to Toyo.

    Corundum sub-rough, in the head, the breakdown of three categories. Which is rough black and red, the purpose of light red, fine red and white, a variety of mesh size uniformity, uniform grain shape, into the edge of the corners of the crystal, a sharp edge, high grinding force.

For stone industrial abrasive marble and other soft materials.

    Glass industrial use: grinding glass burr, TV picture tube, optical instruments, lenses, prisms, watches and clocks, and so on.

    Metal industrial use: sandblasting, rust, grinding and so on.

    Other uses: printing industry grinding adhesive version, as well as light industrial processing plastic, leather, sandpaper and other purposes.

    Natural diamond grinding force slightly lower than the furnace white corundum, but its toughness, with a shell-like section of the characteristics of the advantages of grinding pieces of high finish, sand marks less shallow. Grinding fine and uniform, can improve product quality, unique for this product. Natural emery grinding time is short, high efficiency, low prices, can make up for short life shortages.