You've looked for: Locomotives class 40 (registration: 40-xxxx-y) operated by Constantin Grup.
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[640] [800] [1024] [1280] [original] 40-1081-5 Class 40 of Constantin Grup Station Chiajna (IF) June 23, 2011, Gabriel Dumitriu (other 5 pics with 40-1081-5)	[640] [800] [1024] [1280] [original] 40-1082-3 (-> 91 53 0 40 1082 9) Class 40 of Constantin Grup Station Chiajna (IF) February 5, 2011, Alexandru George Sugaru (other 3 pics with 40-1082-3)	[640] [800] [1024] [1280] [original] 40-1083-1 (-> 91 53 0 40 1083 7) Class 40 of Constantin Grup Station Chiajna (IF) September 13, 2013, Stefan Puscasu (other 5 pics with 40-1083-1)	[640] [800] [1024] [1280] [original] 40-1084-9 Class 40 of Constantin Grup Station Suceava (SV) April 8, 2011, Andrei Birsan (other 2 pics with 40-1084-9)
[640] [800] [1024] [1280] [original] 40-1085-6 (-> 91 53 0 40 1085 2) Class 40 of Servtrans (ex-Constantin Grup) Station Petrosani (HD) November 4, 2010, Gabriel Ailenei (other pic with 40-1085-6)