AS9100 & ISO 9001 Made in the USA



Southwest Plastics employs the latest version of Solid Works, a computer aided design program to help our customers arrive at the optimal part design for their part. It is much more than technology that sets Southwest Plastics apart from the other of thermoplastic and thermoset plastic components manufacturer. Our experience, practicality and know-how born from over 45 years of growing with the plastics industry that brings the greatest value to our customers projects.



In house mold making capabilities give Southwest Plastics an advantage when it comes to rapid production of cost efficient prototype and short run tooling as well as repair, maintenance and modification of molds. Southwest Plastics also has ongoing relationships with qualified outside sources for specialized mold making services, and a working “partnership” with an Asian tooling source for economical production of certain types of molds. Southwest Plastics has the experience to direct the production of tooling for our customer’s project down the right path for the best result possible.

Secondary Operations

Having a complete production machine shop, Southwest Plastics is able to do just about any secondary operation required to finish a part from turning, milling, drilling, tapping and grinding. We also do sonic welding, assembly, part identification and packaging.


Ready to take action? Contact Us!


620 W. Foothill Blvd.,
Glendora, CA 91741

Stop by for coffee!



Questions? Call us!


Prefer a paper trail? Email us instead!