Granite State Metal Works

AOTCO Metal Finishing is New England’s trusted provider of specialty electroplating, electroless plating, anodizing, and other metal surface finishing services. Based in greater Boston and supporting customers throughout the country since 1975, AOTCO is proud of its reputation for reliable & outstanding quality, innovative problem solving and speedy turnarounds. Serving the Aerospace & Defense, Automotive, Electronics, Medical, Optical, Telecommunications, Clean Energy, and other advanced technology industries, AOTCO handles critical and complex jobs including multi-finish plating, complicated masking, parts with complex geometries, exotic substrates, and more. AOTCO is NADCAP accredited, ITAR registered, ISO certified - and follows a stringent quality control system that consistently delivers the highest quality standards & lead times. Through our research and development group, AOTCO LABS, AOTCO engineers work collaboratively with research-driven organizations to develop new processes and products, troubleshoot and resolve complex plating problems, and help scale finishing processes.

Ace Welding Company, founded in 1955, is a manufacturer of pipe and metal fabrications. The firm also offers pipe bending and flanging services. The firm s manufacturing capabilities include angle roller, radial arm drill, plasma and flame cutting water table, air and airless paint systems, finishing sander, sand blasting equipment, pressure washer and clark fork lift. Some other services offered by Ace Welding Company include drilling, punching, fabrication and prototype development. The manufactured goods are delivered through the company-owned fleet of trucks. The firm has headquarters in Merrimack, N.H.