Pro Spot International, Inc., based in Carlsbad, California, manufactures resistance spot welding equipment specializing in a ... pplications for the collision repair industry. The company began in 1986. The company owns and manages an onsite machine shop, research and development department, a fabrication facility and production lines for the various welders. Pro Spot International exports its products worldwide, export sales are managed through our headquarter office. The company owns numerous patents for our ingenious application tools, machines, and procedures. read more