Miniart now has Russian gauge railroad track. I expected that of course, but per a prior discussion:

What gauge railroad did/do the Chinese use? I read that Russia had sold some railroad lines to China a century ago, and that armored trains used by the Russians eventually went to China to be used by the local warlords (Orlik being the most famous example).

Now the one Imperial Russian built in China was the 1520mm gauge I am almost sure.