... buff powder, the apparent density of 0.40 ~ 0.60g/cm3, relatively density 1.4 g/cm3, refractive index of 1.544 (20 C ... water), %≤ 0.4Apparent density, g/ml≥ 0.45Remain (testing sieve ) %0.25mm sieve≤ 2.00.063mm sieve≥ 90Number of grain piece , number ... rod, PVC pipes, PVC windows, doors ,etc.4.PACKING: 25kg pp woven bag or kraft paper bag (18 MT/20’FCL ...