Action Items

Getting in touch couldn’t be easier.

  • Want to discuss a project?
  • Have a question?
  • Need more data?

Reach us anytime.

Whether a specialized equipment design-and-build scenario or a repeatable, mixed volume contract manufacturing project, GEM is committed to building a long-term business relationship.

Email Us

Complete our online form or Email Us with questions or comments about GEM 24 hours a day, 7 days a week.


Hours of Operation
Monday-Friday: 7:30 AM to 4:30 PM EST

Phone: +66 (0) 35 272329-32
Fax: +66 (0) 35 272 300

Our Locations and Directions

401 Leo Street
Dayton, OH. 45404
View Map and Directions

269, Moo 5, Lumsai, Wang Noi,
Ayutthaya 13170, Thailand
View Map and Directions

Career Opportunities

View our Openings. We are always looking for bright and highly talented individuals to supplement our growing team.

75th-anniv © 2011 GEMCITY Engineering and Manufacturing Privacy Policy/Terms of Use