... & glass 4.dia.3-20mm We have the following workshops: 1. Workshop 1: diamond electroplated products: diamond burrs, diamond files, diamond stone ... company was officially set up in 2003. We are exporting dental tools, jewellery tools and industrial tools, like dies, taps, hss ... to Japan, Germany, the USA and Australia Tile & Glass Bit-1(Round Shank) dia.3-20mm