In business since 1971, Johnson Manufacturing Co. Inc. is a custom plastic injection molding company. Located in Harrison, Ark., the company offers products, which include shopping carts, synthetic gun stocks, water pump housings, filters, chairs, high voltage containers refuse cans and caster wheels. Additionally, it provides tool boxes, game calls, cooking boards, agricultural tools and air conditioner foundation bases. The facility is capable of manufacturing anything from plastic and high pressure materials with its medium to large tonnage machines. Johnson Manufacturing Co. Inc. uses a variety of materials for its products, including polyethylene, polypropylene, styrene, polycarbonate, nylon and acetale.