| Business | Phone |
| Reasonantsonic International 220 N East St, Woodland 95776 | (530) 668-2424 |
| Wdc Expolration & Wells 500 Main St, Woodland 95695 | (530) 668-7540 |
| Enterprise Drilling Fluids 1238 Alice St, Woodland 95776 | (661) 589-7210 |
| Geo Western Drilling Fluids Woodland 95695 | (530) 662-7054 |