Features: 1) Size: A-B: dia. 70 x 250mm (10'') 1) Size: dia. 70 x 250mm(10'') 2) Main ingredients: kieselguhr, inorganic antibacterial agent3) Filter precision can reach 0.2-0.5 microns, and under 3kg, water pressures circumstancesthe out-water is 250kg/h 4) Function: purification and anti-bacteriumPacking: Each piece is packed into a single box, and 25 boxes are packed into a carton