color silica sand for waterproof membrane 1 technic: natural or artifical 2 material: High quality ... natural stone 3 colored color silica sand for waterproof membrane 1. feature: durable, waterproof, antiseptic non-toxicity ,high bonding strength, odourless, ... Grounds ,etc.12.Packing: pp bags and wooden pallet.25kg/bag,1ton/pallet. Or as requests color slate flakes for waterproof membrane