AOTCO Facilities

Founded in 1975, AOTCO Metal Finishing has grown by bringing together six specialized surface finishing businesses and their technical expertise into an integrated platform serving advanced manufacturers nationwide.

Today, AOTCO operates four NADCAP-accredited facilities across Massachusetts and Connecticut, combining specialized technical expertise, advanced quality systems, in-house research and development, and scalable production capacity.

Our integrated platform provides customers with a broad range of electroplating, electroless plating, anodizing, passivation, magnesium finishing, painting, and other specialty surface treatments. From complex prototypes and critical components to high-volume production and dedicated capacity programs, AOTCO delivers the technical expertise, flexibility, and reliability required by the aerospace and defense, semiconductor, medical, electronics, optics, and other advanced manufacturing industries.

AOTCO's headquarters is the foundation of our advanced surface finishing platform, specializing in technically demanding plating and finishing applications for mission-critical components.

Our experienced technicians, engineers, and plating scientists support customers working with challenging materials, complex geometries, selective plating, multi-material plating, demanding specifications, and stringent quality requirements.

The facility is also home to AOTCO Labs, our in-house research and development team. Combining chemical engineering, process development, and decades of practical finishing expertise, AOTCO Labs works directly with customers to develop new processes, solve complex surface finishing challenges, and transition innovative technologies from laboratory development to full-scale production.

AOTCO headquarters is NADCAP accredited, ITAR registered, and ISO 13485:2016 certified, with finishing processes supporting applicable REACH/RoHS requirements.

AOTCO 4D is our 50,000-square-foot expansion facility, designed to support high-volume production, large-part processing, and dedicated customer programs.

Building on the specialized capabilities and technical heritage of Hi-Tech Plating, Light Metal Platers, and other operations integrated into the AOTCO platform, this facility brings together advanced electroplating, automated and hoist-line processing, and complementary finishing services.

AOTCO #4 also houses our industrial paint and powder coating operations, media blasting, and cleanroom assembly and packaging capabilities.

The facility supports our Factory-in-Factory and Dedicated Capacity Programs, offering customers priority production capacity, repeatable processes, and tailored operating arrangements that support long-term supply chain reliability.

AOTCO 4D is NADCAP accredited and ITAR registered.

Established in 1958 and acquired by AOTCO in 2018, Plating for Electronics brings decades of precision finishing expertise to the AOTCO platform.

Operating from a 27,000-square-foot facility in Waltham, Massachusetts, PFE specializes in precision anodizing, electroplating, electropolishing, passivation, custom masking, and laser marking.

With extensive experience serving semiconductor, aerospace and defense, medical, electronics, and other advanced technology manufacturers, PFE combines technical process expertise with the flexibility to handle complex components, demanding specifications, and changing customer requirements.

PFE is NADCAP accredited, ITAR registered, and holds ISO 9001 and AS 9100 certifications.  

Founded in 1985 and acquired by AOTCO in 2023, Modern Metal Finishing expands the platform's capabilities in hardcoat, conventional, and specialty anodizing.

Located in Oxford, Connecticut, MMF specializes in both rack and bulk processing, with the flexibility to accommodate diverse part sizes, complex requirements, and high-volume production.  MMF also performs specialty processes including AMS 2488 Type 2 titanium hardcoat anodizing.

MMF combines decades of anodizing experience with process innovation, technical problem-solving, and a commitment to demanding customer specifications. The facility supports manufacturers across aerospace, defense, medical, and other precision industries.

MMF is NADCAP accredited, ITAR registered, and holds a Federal Firearms License (FFL), supporting the specialized compliance requirements of defense and other regulated manufacturing programs.