Russia wont become that friendly with the USA for a while yet. Because even if they trust Donald Trump they cannot trust on his ability to deliver when there are such powerful entrenched interests in America that still oppose him; or that his successor wont just back out of any agreements.
I saw an interview with Duterte of the Phillipines one time where he said: "I cannot deal with America. Whatever they promise, the next president might just change again. When China promises something, I know they will still be the same next year and the year after."
So Russia will not be letting its guard down soon. Especially after muppets like Merkel blabbed that the Minsk 2 agreement was never intended to be honoured by the West and was just an attempt to buy more time to arm Ukraine. And there's a lot to undo before Russia and the USA can have good trade relations anyway. Western Europe seized Russian assets as well as froze them for a long time and kept the interest. Sanctions would have to be undone... Basically, the question is just too early to be asked. But in the event that it does come about, China would not be happy if Russia started supplying manufactured goods to American citizens. Especially as Russia can probably provide better quality on most things. But they'd likely limit their response to the usual blackmail, bribes and competing on price. The Russian army has just had a very good workout to shake off a lot of the corruption and rust that bogged it down. It needs time to recover, like anybody does after a good workout. But it's going to be in better shape once this is all done with.