Top ceramic proppant 30/50 low density high pressure resistance, high conductivity, low ... acid fracturing and hydraulic fracturing of new and existing natural gas and oil wells, which can increase the output and extend the ... 12-20 mesh, 16-20 mesh, 16-30 mesh, 20-40 mesh, 30-50 mesh, 30-60 mesh, 40-60 mesh, 40-70 ... , CBD Zhengzhou, Henan, ChinaNo.08 hydraulic frac sand for oil and gas 30/50 low density