Monday's deals follow a high-profile gas supply deal with Gazprom, worth $400 billion, signed in May. Russia's gas producer agreed to supply China with gas over 30 years.
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It comes amid concerns of Russia's ability to innovate and compete internationally, given the prominence of state-owned gas and oil giants, Gazprom and Rosneft.
But Medvedev said the companies were required to act in accordance with corporate law, and "must be interested in investing in innovation".
Russia's economic expansion has slowed dramatically since tensions with the European Union and U.S. flared up this year. The country has been battling the pain of sanctions from the West since March, when it annexed the Crimean peninsula from Ukraine.
The penalties have targeted the country's energy, defense and finance sectors, and have made it hard for Russian businesses raise finance in the West.
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The ruble has fallen over 20 percent against the U.S. dollar this year, and there has been a surge in capital outflows from Russia. Earlier this month, the International Monetary Fund halved its growth forecast for Russia to just 0.5 percent next year.
Medvedev admitted that Russia must look to diversify beyond the oil and gas sectors, which dominate its economy, but argued that a shift toward innovation was taking place, even within its state-owned companies.
"The environment is forming which is made up of small, private start-up companies," he said.