- Cpi Plastics
- Crystal Design & Mfg
- Custom Microwave Components
- D C's Machining Products
- Edwards Machining & Mfg
- Guy Tech Machining
- Longmont Machining Inc
- Mc Roberts Machine
- Midnight Oil Machining
- Precision Technology Inc
- R & R Machine Shop
- S & W Machining & Mfg LLC
- St Vrain Manufacturing Co
- W-P Instruments Inc
