Metal treating; Metalworking; Metalworking, namely, machining of metal; Metalworking, namely, metal pressing; Metal casting; Metal plating; Gilding; Gold plating; Silver plating; Chromium plating; Magnetization; Tin plating; Nickel plating; Burnishing by abrasion; Soldering; Welding services; Electrodeposition coating of metal; Processing of rubber; Processing of plastics