Mississippi
| Company | Category | Area | Address | Web | Contact person | |
| KEYSTONE PROPERTIES LLC | Nonresidential Building Operat | Mississippi | 210 EDGEWOOD DR, STARKVILLE, Oktibbeha, Mississippi, 39759-2320, USA | - | - | Terry Moulder |
| KEYSTONE RUST PROOFING INC | Plating (Manufacturers) | Mississippi | 260 DATCO IND DR, COLUMBUS, Lowndes, Mississippi, 39702-7639, USA | - | - | Don Mckay |
| KEYWAY PROPERTIES | Commerrcial Rental Property | Mississippi | PO BOX 1295, BRANDON, Rankin, Mississippi, 39043-1295, USA | - | - | Margaret White |