Metal finishing services for others; Treating of metal, namely, stamping; Chromium plating of metal articles; Metal treating; Surface finishing of metal articles for others; Application of wear-resistant coatings on metals and plastics; Soldering; Welding services; Rental of welding apparatus; Rental of electric welding machines; Rental of electric welding apparatus; Rental of gas-operated welding apparatus; Welding services, namely, joining of components using ultrasonic welding techniques; ...