... ,30-50,40-70 mesh ,medium density 10000 psi is supplied for oil and gas wells SHENG DA CERAMIC PROPPANT CO.,LTD ... company winning prestigious ISO9001:2000 status.Ceramic Proppant is divided into 52Mpa, 69Mpa, 86Mpa,and 103Mpa three series, according to bulk density ... -30 mesh, 20-40 mesh between 30-50 mesh, 40-60 mesh, 40-70 mesh and so on. we have 3 production ...