Founded in 1995, Hisina Industrial Co., Ltd. is a professional manufacturer of the industrial ceramics and relative products. The CERAMIC FOAM FILTER and CERAMIC HONEYCOMBS are our main products which have great reputation around the world. Ceramic Foam Filter are widely used in metallurgy, foundry, casting, chemicals, food, car, environment and even nuclear industries. It?s peculiar bone-frame holes like foam and myriad eyelets which only been found in big times microscope make the filtration and calm down turbulent flow nicely. Material Aluminum Oxide Silicon Carbide(SiC) Fused Zirconia Alumina(ZA) Zirconia(Zro2) Usage Temperature 1250=C 1450=C 1600=C 1700=C Usage Aluminum Alloy, Color Metal Ball Iron, Foundry Iron, Bronze Alloy Common Steel, Special Color Alloy Special Steel Density 8PPI, 10PPI, 15PPI, 20PPI Thickness 15mm, 20mm, 22mm Shape Round, Square, Rectangle Dimensional Tolerance Thickness:+0/-2.5mm, Length/Width/Diameter:+1.0/-1.5mm