About Us

Gromax Precision Die & Manufacturing is a full-service tool and die design and manufacturing company, operating for over 40 years. Our headquarters in Germantown is approximately 20 miles north of Milwaukee, in southeastern Wisconsin. Our original die design service was founded by Gus Aulis and Ronald Okonek in 1973. In 1981 Gus, Ron and Max Limmer formed Gromax as a full service provider of tooling design & manufacturing. Originally a regional company, we now serve our clients worldwide.


Our commitment is to provide each client with the best products we have to offer. Throughout our history, we have built a strong reputation for quality and craftsmanship. Our client base includes some of the largest, most inventive corporations in the world. The cornerstone of our business is our people, who build relationships with clients based on honesty and integrity.

Gromax is ISO 9001:2015 Certified. Certificate of Registration


Are you an experienced professional who values honesty and integrity? Gromax has been serving clients in a variety of industries with a track record of excellence for over 40 years. We are always looking for quality candidates to work as tool and die makers, mechanical designers, and other manufacturing professionals. Please submit your resume and /or letter of interest to hr@gromaxprecision.com. Gromax is an equal opportunity employer.