Beijing  - China and Russia signed deals valued at 3.5 billion dollars on Tuesday ahead of talks between Russian Prime Minister Vladimir Putin and Chinese Premier Wen Jiabao, a Russian official said.

An agreement for a loan of 500 million dollars by the Agricultural Bank of China to Russia's VTB was reportedly among the deals, but details of the other agreements were not immediately available.

Putin and Wen were scheduled to attend a signing ceremony later Tuesday following their formal talks.

Russian media had earlier quoted officials as saying major energy deals would be among more than 20 agreements worth about 5.5 billion dollars.

Chinese state media said an agreement was possible on building an oil refinery in the northern city of Tianjin between the China National Petroleum Corporation and Russia's Rosneft, but Putin's deputy, Alexander Zhukov, told reporters that no energy deal was agreed.

Russia's RIA Novosti news agency said officials had discussed "roadmaps on gas cooperation" at a bilateral energy forum in Beijing on Sunday.

The Russian agency said the two sides would sign an agreement on setting up a presidential hotline between China and Russia, while Chinese media said an agreement was likely on advance notification of ballistic missile launches.

The China Daily newspaper on Tuesday said other planned deals included one for telecommunications equipment valued at 200 million dollars, and four agreements for the building of cement plants.

A deal for China to build a high-speed railway in Russia could also be signed on Tuesday, the newspaper quoted Tan Jijun, an expert at the China Foreign Affairs University, as saying.

"Facing the financial crisis, Russia is particularly eager to develop its trade and business with China in a wide range of areas, including not only the energy cooperation but also in the high-tech sector," Tan said.

Putin was also scheduled to attend a meeting of the Shanghai Cooperation Organization, a Central Asian security grouping, on Wednesday.

His visit was timed to coincide with the 60th anniversary of diplomatic relations between China and Russia.

The Shanghai Cooperation Organization was founded in 2001 to enhance security cooperation between its six member states China, Kazakhstan, Kyrgyzstan, Russia, Tajikistan and Uzbekistan. (dpa)