Ceramic proppant is the key material forfracturing of oil and natural gas wells with low permeability. Whenused in the deep well fracturing, ceramic proppant is filled in therock cracks and treated with high-closing fracturing, so that itcan support the cracks not closed and maintain high conductivity ofoil and gas after release of the stress. It can not olny increaseoil and gas production capacity, but extend the service life of oiland gas wells. 1 Maximum strength and density, and fit for use indeepest wells 2 Maintains high conductivity in hot, hostile wellenvironments 3 Excellent roundness and sphericity minimize theabrasion that cause wear on production and pumping equipment 4Available in six sizes??????12/18, 12/20, 16/20, 16/30, 20/40 and30/60