Zaozhuang Ruizhong Gem Crystal Material Co., Ltd.  

Product Name: Opaque Alumina Oxide Crystal as Ky Material Model NO.: 5N Purity: 99.999%: Density: 3.98g/cm3 Hardness: 9: Size: 8-200mm Trademark: polaris Transport Package: Pallet Specification: purity: 99.999% Origin: China HS Code: 71049019 Product Description Synthetic rough opaque white sapphire crackleVarious sizes and shapes are availableLED substrate material which is a kind of raw material of CZ TGT, EFG, KY and morePurity is more than 99.999%Color: Transparent whiteContent is aluminum oxide.