Industrial Grade Ceramic Foam Filter is used to decontaminate the melting metal liquid, to simplify gating system, to improve the metallurgical structure of the castings, to reduce impurities of the castings, to improve casting quality rate, to reduce casting internal re-oxidation defects, to reduce the surface defects after machining of the castings, etc. The Filter needs to be kept in dry place, away from rain and heavy weights. The Filter is available in alumina foam filter, silicon carbide ceramic foam filter, zirconia ceramic foam filter and magnesia foam filter. The Industrial Grade Ceramic Foam Filter has large surface area of slag collection, large inner surface area of filtering, small flow resistance, good filtering effect, etc.