Through the examination by Proppant Laboratory of Langfang Branch of PetroChina Exploration & Development Research Institute, "Wanli" has reached all criteria of Q/SY125-2005 and SY/T5108-1997. It has also passed the inspection of such national laboratories as UK and Russia, etc., which has distinguished "Wanli" as a leading brand both at home and abroad.
The product can be classified as follows:
1. By Anti-fragment: 52MPa (7500psi), 69 MPa (10000psi) and 86 Mpa (12500psi)
2. By volume density: Low-density, medium-density and high-density.
3. By the specifications of products: 6-12mesh, 8-16mesh, 12-18mesh, 12-20mesh, 16-20mesh, 16-30mesh, 20-40mesh, 30-50mesh, 30-60mesh, 40-60mesh, 40-70mesh, 70-140mesh, etc.