MOSCOW, July 16 (Reuters) - Digital platform Qifa has expanded into facilitating two-way trade between Russia and China as it seeks to solve payment issues currently stunting the flow of goods and services.

Moscow and Beijing have resorted to complex steps to try to avoid payment delays, including a workaround using small, regional Chinese banks, as the threat of secondary U.S. sanctions on Chinese banks that facilitate trade with Russia deters larger lenders.

Until last year, Qifa's primary focus was the import of Chinese consumer goods to Russia, but it launched bilateral trade this year, charging commission from buyers in China in yuan, and buyers in Russia in either yuan or roubles, founder and majority shareholder Sun Tianshu said on Tuesday.

The strongest demand is for industrial goods from China - car parts, agricultural machinery, tools and equipment, Tianshu said. Some day, it will branch out to commodities.

"Now the priority is not raw materials, but in the long-term perspective energy products will also be present on our platform."

Trade between Russia and China ballooned to a record $240 billion in 2023. Qifa forecasts annual trade exceeding $350 billion by 2028, with a tenfold increase in market share for B2B digital commerce.

Deputy board chairman Kyle Shostak said Qifa used a wide network of financial institutions to ensure smooth payments, particularly as settlement problems have become more acute this year.

"This is due to secondary U.S. and EU sanctions," Shostak said. "The answer to this is simple - we have been a Chinese company for a long time and we have a huge number of banks in China that have worked with us all this time.

"These are not necessarily key, international Chinese banks. We usually go to banks where are suppliers are, these are regional banks."

Reuters reported last month that China was authorizing small, regional banks that can fly below the U.S. sanctions radar to ensure payment flows with Russia can continue. (Reporting by Elena Fabrichnaya; Writing by Alexander Marrow; editing by Barbara Lewis)