MOSCOW, June 19 (Xinhua) -- Russia's nuclear equipment export monopoly Atomstroy export expected to further its ties with China in building nuclear power stations, including jointly contracting projects in a third country, the company head said on Tuesday.

    "A working group has been set up to prepare a feasibility studyfor the construction of the third and fourth power units, taking into account the experience of building the first two units (in China's Tianwan nuclear power plant)," Atomstroy export's head Sergei Shmatko said.

    The first unit of the Tianwan NPP in eastern China's port city of Lianyungang began commercial operation in May and the second has been on trial and is scheduled for commissioning in late December.

    As the largest-ever technological and economic cooperation project between China and Russia, Tianwan NPP will have four generating units and space for four more on the completion of the first-phase of development, which began in October 1999.