Dear Business Friends: We are a optical glass and optical crystal compents company located in China Main Land. As the producing need, we plan to buy such kind of abrasive, please send us best prices and delivery. 1.AL2O3 powder: be used to polish optical crystal, such as calcium fluoride,silicon chip,germanium wafer and so on. 0.5μm. 2. Diamond Powder: be used to polish optical compents. 3μm 1μm 1/8μm. Will you please send us the detailed specification docments include delivery terms, terms of payment, delivery way? Your prompt response would be appreciated. Show More