Chinese entrepreneur Wang Min is delighted about Russia's embrace of the yuan. His LED lights company can price contracts to Russian customers in yuan rather than dollars or euros, and they can pay him in yuan. It's "win-win," he says.

Wang's plans have been transformed by the conflict in Ukraine and the subsequent Western sanctions on Moscow that have shut Russia's banks and many of its companies out of the dollar and euro payment systems.

His contract manufacturing business with Russia has been small in the past, but now he's preparing to invest in warehousing there.