| Business | Phone |
| Great Lakes Chemical Corp 2224 Haynesville Hwy, El Dorado 71730 | (870) 862-5141 |
| Great Lakes Chemical Corp 324 Southfield Cutoff, El Dorado 71730 | (870) 862-1355 |
| John Garrison Chemicals Inc 408 E 15th St, El Dorado 71730 | (870) 864-0040 |
| Petrin Corp 2226 Haynesville Hwy, El Dorado 71730 | (870) 863-0520 |