A 34-person delegation organized by coated abrasives sub-association visited America for research on May 5th -18th, 2011. During this time they participated in National Hardware Show and visited Coated Abrasives Fabricators Association, Scheldahl Technical Materials, Treibacher Schleifmittel Company. They experienced the modern civilization of America, advanced manufacturing technology by their own and established good relationship with CAFA. We must have a clear understanding of gap with developed country and speed up ourselves development.