7 slaughterhouse equipment; namely, equipment and machinery for cutting, boning, and curving of meat and for thermal processing of meat and meat products, vacuum packaging equipment for meat, cheese, fish and other food products, equipment and machinery for processing by-products from the meat industry, equipment for grading of meat and carcases including hog carcases; control valves for oil and gas plant and equipment; paper towels and wipes and dispensers for paper products; signs including directional signs