... proppant 1,made of local high quality bauxite 2,high intensity ,high diverting capac 3,hot sell overseas high density ceramic proppant GMRC has ... independently developed the low, medium and high intensity ceramic proppants with the brand No. of 52MPa, 69MPa ... for hydraulic fracturing, it helps to improve 30%-50% oil output. Now is widely used in oilfields of China, US, Rusia ...