detailed selling lead description company as follows of main product specification: 1) grain degree sand grains: f. p8# ~ 220# 2) segment sand splits: 4 / 8 / 7 / 12 / 14 / 24 / 30 / 90, 36 / 70, 80 / 180 3) mixed with sand refractory grains: 6f, 10f, 16f, 150f, 200f, 325fdtc 4) tiny powder (w65, w50, w40, w28, w20, w14, w10, w7, w5) 5) we can produce according to special requests features: 1) black silicon carbide: a) specifications: sic 98.5-97%min f.c 0.2-0.3% max. fe2o3 0.6-1.2% max. b) size: 12# - 240# w63 - w5 packing: 1,000kg/bag 2) green silicon carbide: a) specifications: sic 98.5-97%min f.c 0.2-0.3%max fe2o3 0.2-0.7%max b) size: 12#-240# w63-w5 packing: 1,000kg/bag 3) black silicon carbide: a) specifications: sic 88 - 97% min. b) sizes: 0 - 10 0 -