... shape: square ,round, ring ect Heteng Metal Filter Equipment (free sample)Metal Filters media filtersfor the filtration of air ... ,and also the top Management .As for Equipment,we have About 60 sets of machines. ... ,air filter, , range hood filter,antisepsis filter, metal frame filter ,plate air filter,draught filter, fan filter ... wooden cases or carton Deep processing metal filter equipment (HT-GL-007)