C
M
- Magna Drive Automotive Industries of America
- MAHLE Behr Charleston Inc.
- Material Management, Inc.
- Mercedes-Benz Vans, LLC
- Mermet Corp.
- Metalworx, Inc.
- Metromont Corporation
- Michelin
- Milliken & Company
- MINILEIT, Inc.
- Mohawk Industries
- Mount Vernon Mills
- MTU America Inc.
- Multiplastics
- Mumford Industries
N
- Nan Ya Plastics Corp.
- Nephron Pharmaceuticals Corporation
- New Life Chemical & Equipment, Inc.
- NICCA U.S.A., Inc.
- Novolex Holdings, Inc.
- Nucor
- Nutramax Laboratories, Inc.
S
- SCRA
- SC State Ports Authority
- Sage Automotive
- Santee Cooper
- Sea Hunt Boat MFG Co., Inc.
- Shaw Industries Group, Inc.
- SI Group
- Solvay
- Sonoco Products Company
- South Carolina Electric & Gas Company
- Springs Creative
- Staubli North America
- Stealth Concealment Solutions, Inc.
- Suminoe Textile of America
- Sunbelt Packaging
- Swagelok
- Synthomer USA LLC
