Air-conditioning apparatus; Apparatus for the exchange of substances and heat for use in the production of steam, for use in cooking and for use in refrigeration; Coolant recovery systems, comprising reservoirs; Dryers used for the removal of solid, liquid and vapor contaminants from compressed air and gases; Drying apparatus for use in heating, ventilation systems, air conditioning systems and refrigeration systems; Heat sinks for use in heating, cooling and ventilating apparatus; Plate warmers; Plumbing fittings, namely valves; Portable thermoelectric cooling and heating unit for food and beverages; Refrigerated self-service cases, refrigerated self-service deli cases and custom fabricated refrigeration systems used by supermarkets and convenience stores to store and display food and beverage products and structural parts and fittings therefor; Refrigerating appliances and installations; Refrigerating machines; Refrigerating machines and installations; Refrigeration equipment, namely, food and beverage chilling units; Transport refrigeration units for trucks, trailers and shipping containers