BEIJING, Oct. 16 -- A senior official from China's atomic energy agency on Thursday reiterated the country's position on the peaceful use of nuclear energy, saying it will resolutely oppose any proliferation of nuclear weapons.

Nuclear weapons proliferation should be solved properly, Wang Yiren, vice chairman of the China Atomic Energy Authority, told Xinhua at a symposium marking the 30th anniversary of China's entry into the International Atomic Energy Agency.

Thursday also marked the 50th anniversary of the detonation of China's first atomic bomb.

China has gradually established an administrative and legal system for importing and exporting nuclear weapons in line with the international standard in order to prevent nuclear weapons proliferation, Wang said.

China also carries out nuclear power projects according to the highest international standards of nuclear security, Wang added.

Wang said that China has 21 nuclear power generating units in operation with total installed capacity of more than 19 gigawatts, and another 27 units under construction.

"By 2020, China is expected to have nuclear power generating units with total installed capacity reaching 58 gigawatts," Wang said.