Hi Mike
Odd list as VR-B and VR-C shouldn't be there. Looks like it dates form the late nineties.
China uses three suffix sets.
B-four numbers for China, B-five numbers for Formosa and B-Htwo letters for Hong Kong, the old VR-H without the VR
The western aircraft operated in Russia are all leased. Using EI or VP-B registrations is very common. Most of Alitalia is EI registered and many fleets arround the world are registered in Ireland.
There is no need to get the type Russian certification as they have no intent on buying any.
The leased aircraft can be and in Aeroflots case, are returned now and then and others take their place. Easy, adjustable fleet...just pay the montly rent and get on with it.
The main reason why they don't use Russian types aprat from a few new ones is not so much regulations stopping them, or though in some cases that might be the case, it is more do do with economics. They just can't compete with Western types. How would you get on operating an IL-62, 76 or 86 against a Boeing 777 or A.330??. Easy option is to rent what the other boys are using until maybe, one day your own guys might come up with something better. They still do use some of the older Russian types but they have gone from the main international routes.
Even though nowadays there is problems with allowing some Russian types into some European airports, the swing to Western types had already happened before this.
Even in the early nineties, from about soon after the break up of the USSR, Aeroflot were using Airbus A.310 and this led onto Boeing 767s followed by other types. It was a gentle evolution not an overnight jump to the West. They just re equiped as normal, but with Western types. Some Airlines were happy to use Soviet types and still are where there is perhaps no direct Western replacement. IL-76, AN-124, An-224.