... because of releasing force, thereby to maintain the high conductivity of oil and gas, not only ... Our oil Proppant are divided according to the anti-crushing strength into 52Mpa (105KN), 69Mpa (140KN), and 86Mpa, ... density are divided into: low-density, medium density, high-density. Product specifications are :12-18 mesh ,12 ... produce as per clients special requirements. high strength oil ceramic proppant