7 FINE FILTRATION FILTERS FOR MOTORS AND ENGINES FOR OIL, GAS AND AIR; FINE FILTRATION FILTERS FOR MACHINES FOR USE IN SEPARATING SOLIDS FROM LIQUIDS OR GASES IN THE PETROCHEMICAL INDUSTRY, THE BIOCHEMICAL INDUSTRY, THE CHEMICAL INDUSTRY, THE AUTOMOTIVE INDUSTRY, THE PHARMACEUTICAL INDUSTRY, THE FOOD AND BEVERAGE INDUSTRY, THE TREATMENT OF WASTE WATER, THE TREATMENT OF MEDICAL WASTE, CATALYST RECOVER, AND OIL AND EMULSION FILTRATION; AND CARTRIDGES FOR FILTERING MACHINES FOR USE IN THE PETROCHEMICAL INDUSTRY, THE BIOCHEMICAL INDUSTRY, THE CHEMICAL INDUSTRY, THE AUTOMOTIVE INDUSTRY, THE PHARMACEUTICAL INDUSTRY, THE FOOD AND BEVERAGE INDUSTRY, THE TREATMENT OF WASTE WATER, THE TREATMENT OF MEDICAL WASTE, CATALYST RECOVERY, AND OIL AND EMULSION FILTRATION