| Business | Phone |
| Arrow Engineering 4946 Azusa Canyon Rd, Irwindale 91706 | (626) 960-2806 |
| B & W Precision Inc 13955 Live Oak Ave, Irwindale 91706 | (626) 337-1120 |
| E & L Kirk Machine Tools 5367 Irwindale Ave, Irwindale 91706 | (626) 814-1125 |
| Geometric Machinery 16258 Arrow Hwy, Irwindale 91706 | (626) 337-0079 |
| Commercial Die Co 1440 Arrow Hwy # E, Irwindale 91706 | (626) 357-0877 |
| Crative Tool & Die Engineering 16300 Arrow Hwy # K, Irwindale 91706 | (626) 338-9829 |
| Geometric Machine Co 16300 Arrow Hwy, Irwindale 91706 | (626) 851-3400 |
| Mape Engineering 15556 Arrow Hwy, Irwindale 91706 | (626) 338-7964 |
| Marco Tool 16300 Arrow Hwy # H, Irwindale 91706 | (626) 960-4288 |
| Pattco Machining Inc 1442 Arrow Hwy # H, Irwindale 91706 | (626) 358-2871 |
| Rtm Machining 16300 Arrow Hwy # E, Irwindale 91706 | (626) 851-2440 |