1.good roundness and competive price 2.professional proppant manufacturer 3.have a good reputation 4.ISO9000:2008

Specification	Bulk Density	Apparent Density	Close Pressure	Crush Resistance(%)	Sphericity/Roundness
	(g/cm3)	(g/cm3)	(Mpa)
High Density	>1.80	>3.3	69	≤7.0	>0.85
20/40mesh
High Density	>1.80	>3.3	69	≤25	>0.85
16/30mesh
Medium Density	1.65-1.8	3.1-3.35	69	≤6.0	>0.85
20/40mesh
Medium Density	1.65-1.8	3.1—3.4	69	≤5.0	>0.85
30-50mesh
Medium Density	1.65-1.8	3.1-3.4	69	≤5.0	>0.85
40/70mesh
Low Density	<1.65	≤3.1	52	≤8.0	>0.85
20/40mesh

bauxite ceramic proppant for oil fracturing(20/40mesh,30/50mesh and 40/70mesh)