1,High technology,high quality 2,Increased permeability 3,Make oil and gas flow ,then increase the productivity The high-strength fracturing proppant is based on large quantity of Bauxite ,mixed with small part of chemical agent and phase transfer agent ,then refined ,graulation .the specification of particle range from 0.45mm to 0.90mm,from 0.09mmto 0.224mm ,which are sintered in the high ...