... 30/50,40/70 Mesh Oil Fracturing Proppant (Middle Density) Product Name : Fracturing ProppantSynonym : Oil fracturing proppant ,ceramic sand, ... ,frac sandH.S.Code : 6914900000 Fracturing Proppant is a kind of ceramic particle product, has the very high fracturing intensity, mainly ... bauxite, coal and so on many kinds of materials, with ceramic sintering and into, is a natural quartz sand, glass ball, ...