The beverage dispensing equipment industry is defined to mean and include the manufacturing for sale and the installing by the manufacturer of all dispensing equipment for beverages as herein defined, including front counters and back bars, drain boards, soda fountains, and carbonators, and parts thereof, which are a part of beverage dispensing equipment and sold in connection or for use therewith, but not including barrels, kegs and other containers in which beverages are packaged for delivery to the dispenser.