Ken,
The majority of Ukraine's Soviet era tanks were taken out of the picture by the Russian Federation in the opening two months of the conflict. Further, Tungsten core and Sobot core munitions are more than enough firepower to take out Ukraine's heavy mobile armour and far lighter vehicles - the Russian's should know, they bloody well built them. Even the much vaunted French, German, British and Yank MBTs will have most of their most modern anti-tank munition armour removed given they don't want it landing up in Russian hands, as such, again regular anti-tank tungsten and sobot munitions will suffice, i.e., no need whatsoever for DU munitions, which, both Russia and China would be keen on banning internationally if an arms agreement ban were possible.
At the end of the day, this DU munitions crap is pure propaganda meant to sour Russian/Chinese relations, given China genuinely desires a peace agreement between Russia and Ukraine. Obviously, the nutters ruling the UK don't give a toss and Zelensky don't give a toss if DU munitions are used on Ukrainian soil, I mean they are happy rounding up 17 year olds and 60 year olds to face off against Russian artillery, which essentially is murder, so why not poison the Donbass with toxic depleted uranium whilst you are at it, thus denying Ukrainian ethnic Russians the use of the land. Oh, and these are supposed to be the good guys - my arse they are!