... efficiency good brightness V shape glass engraving wheels (largest supplier in China)PRODUCT DESCRIPTIONEngraving wheel, also called Glass grooving ... Iraq. Czech, Korea, Japan, Tai wan, The United States, Canada.CompanyEstablished in 1998, Zhengzhou Longda Abrasives Co., Ltd is a ... specialized enterprise that engages in the research, production and sales of various kinds of ...