... high-strength proppant 3. low-density high-strength proppant `````````````````````````````````````````````````````````````````````````````````Ceramic Proppant is divided into 52Mpa, 69Mpa, 86Mpa,and 103Mpa ... three series, according to bulk density,Ceramic Proppant is divided into: low-density, medium density, high ... 60 mesh, 40-70 mesh and so on pop oil fracture ceramic proppant