16 INTERIOR AND EXTERIOR ARCHITECTURAL AND INDUSTRIAL COATINGS AND FINISHES, INCLUDING HYGIENIC AND BACTERIA PROOF COATINGS FOR MAINTAINING FLOORS AND EQUIPMENT OF BREWERIES, DAIRIES, BAKERIES, CHEMICAL AND OTHER PLANTS, AND HOSPITALS; FOR ABRASION, ACID AND ALKALIRESISTANT AND FIRE RETARDANT COATINGS; AND FOR METAL PRIMERS