Dong-yen Grinding Wheel Materal Co., Ltd specializes in manufacturing, surface polishing water-proof gringding wheel and gravure grinding wheel, all types products are adsolutely water-proof in grinding through water or oil. Since 1979, we've been doing researches to provide our customer the best quality of service, from the begining of cutting course to the tast of polishing and grinding. It will reach its high efficiency at lower cost and grind the best quality of products you need. Our products are edmired by the markets, and we'll go on serving our customers with sincere and responsible manners.

2007 Dong-Yen has a revolutionary big break through, always grasps changes with each new day, and keep the spirit which strives for perfection. Finally, on the August of 2007 we bring you "Dong-Yen Black Diamond" grinding wheel. One that combined heavy grinding and smooth polishing at the same time. Dong-Yen Black Diamond totally smashing the tradition theory that cutting grinding wheel cannot polish the view which or the polishing wheel cannot cut. Now Dong Yen Black Diamond grinding wheel have proved after scene experiment by Taiwan and the domestic factories.