The Future Finished On Time

Manufacturers across the country rely on AOTCO to deliver exceptional passivation services to protect your parts and ensure they will perform as expected. With a comprehensive suite of surface finishing solutions, AOTCO is America's trusted partner for metal finishing.

Trusted by America's leading advanced manufacturers, AOTCO provides extensive pre & post surface finishing processes including: laser marking and engraving, Hydrogen embrittlement stress relief, chem film, and electropolishing.

AOTCO's Dedicated Capacity Program provides access to dedicated equipment and production resources, guaranteed lead times, greater control over production, and priority access to expansion capacity for peak periods. With large part (hoist line) & high-volume production, you can count on AOTCO to grow your business.