Located in Joliet, Illinois, Mastermolding was founded in 1988. We engineer and produce custom injection mold thermoplastic from engineering grade resins for the OEM and aftermarket industries.

We began by servicing a wide variety of industries and manufacturers in the industrial heartland of America. With growth, we have expanded to serve customers worldwide. We are fully integrated with capabilities from material selection and tool development through full production. 

Mastermolding is proud to be partners with companies in industries as diverse as: 

• Automotive and Transportation

• Healthcare

• Electronics

• Industrial

• Consumer

• Research

From your first contact with Mastermolding, you will experience a difference – a difference that reflects our commitment to customers – even before they are customers. 

We truly believe in and work our mission, the foundation of which is to: 

• Continually Improve in our effort to produce quality

• Provide quality in our products

• Quality in service

• Quality in timeliness of delivery

Please contact us for more information on how we can help you.