... ,M,H three series for differ usa; 4, High fl conductivity; 1.Brand Name:DESHI2.Type:Fracturing Ceramic Proppant3.Place of Origin ... : Guizhou, Sichuan or Henan, China (Mainland)4.Application:Oil & Gas Development, Specifially designed for Oil ... .Model Number:20-40, 30-50, 40-70, etcSpecifically designed for Fracturing.Ceramic Proppant. Ceramic Proppant