We are a professional oil ceramic proppant manufacturer in north China.Our oil Proppant are divided according to the anti-crushing strength into 52Mpa (105KN), 69Mpa (140KN), and 86Mpa, (174KN) three series, according to bulk density are divided into: low-density, medium density, high-density. Product specifications are :12-18 mesh ,12-20 mesh ,16-20 mesh ,16-30 mesh, 20-40 mesh between 30-50 mesh, 40-60 mesh, 40-70 mesh and so on.