1. Ceramic proppant of low density and high strength
   2. Ceramic proppant of medium density and high strength
   3. Ceramic proppant of high density and high strength
   Oil and gas fields can choose proper ceramic proppant according to the depth and width of cracks
   Mesh size：6/12, 8/16, 12/18, 12/20, 16/20, 16/30, 20/40, 30/50, 40/70
   Strength stress ：52MPa（7500psi）、69MPa（10000psi）、86MPa（12500psi）、103MPa（15000psi）