suitable for hand or machine grinding mill

Sponge sandpaper is a mobile phone casing surface as the most highest utilization rate should be polished and abrasive applications such as Foxconn, Pegatron, Huawei, prestige, accessible, BYD and other  cutting and grinding disc large mobile phone shell grinding plant, especially for like iphone, sansung, millet various processes such as cell phone case polished surface. Since 2006, the sponge sandpaper polished by the patch applied to the model to move to the best cell phone case sanding sandpaper after mandatory from the initial 3M sandpaper sponge, NORTON sponge sandpaper, LUCKYSTAR sponge sandpaper and other imported original products in the market three pillars, due to imports high cost, long period of goods, factories continue to reduce production costs to pursue slowly emerged on the market over the possessions  zirconia flap disc  brand developed the production of sponge sandpaper, of which the trader profits abrasives plant produced DLC sponge sandpaper sandpaper sponge in the domestic more prominent, and its products using, corundum, silicon carbide, white fused alumina, zirconia alumina abrasive such as a substrate with the best quality of the binder coated sponge, sponge sandpaper all in strict accordance with the production process for production abroad, not only cheap, quality is more and imported sponge sandpaper same, Since the product launch has been mini flap disc  a number of large enterprises to adopt on the phone casing polished product with a high temperature, acid, etc., suitable for hand or machine grinding mill, but also in accordance with the requirements of any customer, any model tailored to fit the needs of the sponge sandpaper, separable cut long or round, gum, back velvet different sponge sandpaper, grit 120-180 thickest and most fine of up to 3000-4000 or finer, and the other to provide OEM customized business.
(3) Soft water resistance test After the test the sandpaper, air at 20 ℃ remain after lh, to a diameter of 15 ~ 60mm, 180 on the rod. Bending, surface cracking observed situation. Fine sand smaller diameter rods, thick sand then use larger diameter rod, with its hole in crack width not exceeding 1.5 times the thickness of sandpaper qualified.