... 30/50mesh ceramic sand 1,good sell overseas 2,Increase output of oil and gas 3,High quality and competitive price GMRC ceramic ... the low, medium and high intensity ceramic proppants with the brand No. of 52MPa ... natural gas fracturing,etc.The size of ceramic proppants can be classified into: 12-20 ... 30 mesh, 20-40 mesh, 30-50 mesh, 40-60 mesh, 40-70 mesh, 70-100 mesh, etc. GMRC is now developing ceramic ...