... , Semi-conductor, Glass, Optics, Metal, Ceramic, PCD/PCBN, etc1. Diameter from 75mm, 100mm, 125mm, 150mm, 160mm, 175mm, to 910mm. 2. Shape ... so on 3. Diamond or CBN grain size can be from rough to fine, 30#, 50#, 60#, 80#, 100#, 120#, 140 ... quality and competitive price, we imported high quality diamond/CBN powder from south korea 2) Excellent after-sales service 3) The products ...