... Bauxite,Coal,Manganese powder, 2) Feature:Ceramic Proppant has much higher fracture strength and more environmental, it is ... manufactured by Bauxite and coals in high temperature. In the exploration of deep oil well, Ceramic proppant ... per clients’ specification. 4) Anti-crushing strength: 52Mpa, 69Mpa, and 86Mpa. 5) Bulk density: medium density, 6 ...