... long service life Our One of production angle. Ceramic Sand filter, water filter, professional manufactureGood quality, compettive price, 1. Shaped in sphere ... mechanical strength, less abrasion loss, and never be damaged,5. Corrosion resistant, no run-off and no harmful substance ... or coal filters itself. Ceramic Sand filter Main specification ItemIndexRemarkParticle size(mm)0.5-3.0 Bulk density(g/ml ...