| 3S3v Sigma USA INC. | Georgetown | 100–499 | ● ACTIVE |
| APAlpek Polyester Usa, LLC Columbia Site | Gaston | 100–499 | ● ACTIVE |
| BCBasf Corporation Whitestone Site | Spartanburg | 20–99 | ● ACTIVE |
| BMBasf Metals LLC | Seneca | 100–499 | ● ACTIVE |
| CLCelanese LTD Enoree Plant | Enoree | 100–499 | ● ACTIVE |
| CPChemtrade Performance Chemicals US LLC | Carlisle | 20–99 | ● ACTIVE |
| DNDsm Nutritional Products | Kingstree | 100–499 | ● ACTIVE |
Harrell Industries, INC. | Rock Hill | 20–99 | ● ACTIVE |
Hentzen Coatings INC | Greenville | 20–99 | ● ACTIVE |
| MCMilliken Chemical Allen Plant | Blacksburg | 100–499 | ● ACTIVE |
Nation Ford Chemical CO | Fort Mill | 20–99 | ● ACTIVE |
Organic Standard Solutions International LLC | North Charleston | 20–99 | ● ACTIVE |
| OOrtec:easley | Easley | 100–499 | ● ACTIVE |
| PPPbi Performance Products INC | Rock Hill | 20–99 | ● ACTIVE |
| RCRitedose CORP | Columbia | 500+ | ● ACTIVE |
| SCShakespeare Company, LLC | Columbia | 100–499 | ● ACTIVE |
| SISymrise, INC. - Bushy Park | Goose Creek | 100–499 | ● ACTIVE |
| SUSynthomer USA LLC | Roebuck | 20–99 | ● ACTIVE |
| TATeknor Apex Carolina CO | Fountain Inn | 100–499 | ● ACTIVE |
| TSToll Solutions LLC | Duncan | 20–99 | ● ACTIVE |
| WUWeylchem US INC | Elgin | 20–99 | ● ACTIVE |
Contec, INC | Spartanburg | — | ● ACTIVE |
| CIContec Inc., Locust Grove | Spartanburg | 100–499 | ● ACTIVE |
| HSHigh-purity Standards, LLC | North Charleston | 20–99 | ● ACTIVE |
Integrated Micro-chromatography Systems, INC. | Irmo | — | ● ACTIVE |
| LGLonza Greenwood LLC | Greenwood | 500+ | ● ACTIVE |
Nova Gas Technologies, INC. | North Charleston | — | ● ACTIVE |
| PCPulcra Chemicals LLC | Rock Hill | 20–99 | ● ACTIVE |
Rodgers Fertilizer LLC | Saluda | — | ● ACTIVE |
| SWSouthern Water Treatment CO INC | Greenville | — | ● ACTIVE |
| SCSterling Contract Packaging INC | Moore | 20–99 | ● ACTIVE |
Atsko Holdings, INC. | Orangeburg | — | ● ACTIVE |
Clayens US Holding INC | Greenville | — | ● ACTIVE |
Congru, L.l.c. | Moore | — | ● ACTIVE |
Earthmed LLC | Columbia | — | ● ACTIVE |
| ELEknox LLC | Columbia | — | ● ACTIVE |
Firstkem LLC | Greer | — | ● ACTIVE |
Flanders INC | Charleston | — | ● ACTIVE |
Halocarbon LLC | North Augusta | — | ● ACTIVE |
Lowcountry Biosource, INC. | Walterboro | — | ● ACTIVE |
| MIMag It LLC | Simpsonville | — | ● ACTIVE |
| MCMankiewicz Coatings LLC | Charleston | 100–499 | ● ACTIVE |
Outdoor Hands, LLC | Aiken | — | ● ACTIVE |
Parimer Scientific LLC | Easley | — | ● ACTIVE |
Peerless Coatings Sc LLC | Sumter | — | ● ACTIVE |
Rockit Pest INC. | Greenville | — | ● ACTIVE |
Roses Quality Paints INC | Cayce | — | ● ACTIVE |
Simpko, LLC | Greenville | — | ● ACTIVE |
Somatoceutics LLC | Mount Pleasant | — | ● ACTIVE |
| TRThorne Research INC | Summerville | — | ● ACTIVE |