Plastic Mold Manufacturers locations near Covina, CA

Showing 1–5 of 5 results

Our Covina, CA directory covers 5 plastic mold manufacturers listings in 5 ZIP codes. Listings here were last checked in Oct 2026.

Updated Oct 2026

Coast Plastics Inc

📍 16009 Avenida Padilla, Irwindale, CA, 91702

📞 626-969-8484

🌐 coastplastics.com

Coast Plastics Inc is a plastic mold manufacturer located in Irwindale, California. The company specializes in producing a variety of plastic components and molds for different applications. Its recent online activity indicates it is an active business in the area.

Leeway Molddesign Engineering

📍 238 S Orange Ave, Brea, CA, 92821

📞 714-256-4433

Lee Ann Plastics LLC

📍 936 E Francis St, Ontario, CA, 91761

📞 909-923-3848

Updated Oct 2026

Conroy & Knowlton Inc.

📍 320 S Montebello Blvd, Montebello, CA, 90640

📞 323-665-5288

🌐 conroyknowlton.com

Conroy & Knowlton Inc. is a plastic fabrication company located in Montebello, California. The business specializes in creating custom plastic products and components. Recent activity suggests it is operational and serving clients in the area.

P M D Inc

📍 12464 Mccann Dr, Santa Fe Springs, CA, 90670

📞 562-903-4591