- Catalysis,S.L.
| Испания | - Centr mody "Medstilservis", PFK
| Russia | - CENTR-KONTUR, OOO
| Russia | - Centralnoe konstruktorskoe byuro tyazhelogo mashinostroeniya, FGUP
| Russia | - Centrodorstroy ASTAR, OOO
| Russia | - Centrotransstroy, OAO
| Russia | - Centrotranstehmontazh, OAO
| Russia | - CHastnoe ohrannoe predpriyatie "Russkaya ohrana", OOO
| Russia | - CHeboksarsky elektroapparatny zavod, OAO
| Russia | - CHeboksarsky priborostroitelny zavod "Elara", AO
| Russia | - CHelyabinsky mehanichesky zavod, OAO
| Russia | - CHelyabinsky traktorny zavod, OAO
| Russia | - CHelyabinsky truboprokatny zavod, AOOT
| Russia | - CHelyabinsky zavod metallokonstrukciy, AOZT
| Russia | - CHerepovecky staleprokatny zavod, OAO
| Russia | - CHerkassky zavod "Strommashina", AOZT
| Ukraine | - CHerkizovsky molochny zavod, OAO
| Russia | - CHOO "Sfinks Alyans", OOO
| Russia | - CHusovskoy metallurgichesky zavod, OAO
| Russia | - CKB tyazhelogo mashinostroeniya
| Russia | - CKIB SSO, filial GUP KB priborostroeniya
| Russia | - COKBleshozmash, FGUP MPR Rossii
| Russia | - Company "Mir", Ltd
| Russia | - Computer modelling laboratory, Ltd
| Russia | - CONTACT GmbH
| Germany | - Cork-S
| Russia | - CTA-Press
| Russia | - CtCt, ZAO
| Russia |
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