H&H Engineers

www.hhengineers.com

Established in 1975, H&H Engineers is a manufacturing firm specializing in the design, fabrication, and repair of pressure and vacuum vessels. The company utilizes a comprehensive range of machining capabilities to produce precision components and machine weldments for its clients. They operate in compliance with rigorous industry standards for vessel construction and maintenance. By combining engineering expertise with specialized fabrication equipment, the firm delivers customized metalwork solutions. H&H Engineers maintains a commitment to quality and technical accuracy throughout the manufacturing lifecycle.

Tri-Star Machine, Inc.

tristarmac.com

Tri-Star Machine, Inc. is a family-owned machine shop based in Methuen, Massachusetts, providing precision manufacturing services since 1990. The company specializes in milling, turning, laser engraving, and component assembly for sectors including electronics, medical, biotech, semiconductor, telecommunications, and aerospace. Utilizing a 9,000-square-foot facility, they support projects ranging from individual prototypes to full-scale production runs. The company integrates traditional machining techniques with advanced technology to ensure high-accuracy components and consistent quality control. They emphasize rapid turnaround times and maintain a versatile production environment capable of processing various metals and plastics.