1.ISO13503-2 standard 2.High strength and professional manufacturer 3.Good conductivity and permeabiltiy 4. ... ), 69MPa (10000psi) and 86MPa(12500psi), 103MPa (15000psi) 2.Bulk density:low density, medium density and high density,.3.Specification:20/40mesh, 30/50mesh, 40/70mesh, 50 ... can be made as per clients' need 20/40 mesh medium density Ceramic Proppant