| Business | Phone |
| Vanco Trading Inc 50 Old Kings Hwy N # 101, Darien 6820 | (203) 656-2800 |
| Trammochem 19 Old Kings Hwy S # 25, Darien 6820 | (203) 655-7770 |
| Sedco Chemical 50 Old Kings Hwy N # 101, Darien 6820 | (203) 655-0063 |
| Charkit Chemical Corp 9 Old Kings Hwy S, Darien 6820 | (203) 655-3400 |