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porcelain enamel, PEI, enamelling industry, porcelain on steel, vitreous enamel, cast iron enamel, porcelain enamel institute, porcelain, enamel, frit, appliances, architectural, panels, plumbing, sanitaryware, signs, cookware, woodstoves, barbecue, grills, steel, building, metal, finish, writing board, chalkboard, blackboard, whiteboard, ranges, stoves, ovens, cooktops, storage tanks, waterheaters, washer, dryer, sinks, lavatories, bathtubs, bathroom fixtures, dividers, electronic circuitry, pi |