"China has established itself as a nuclear power. The nuclear forces in China, however, will remain small when compared to the Soviet nuclear forces. The Chinese will not try to match the superpowers. The Chinese however, will continue to seek Western technology support for their underground nuclear test program. [...] Between 150 and 160 warheads are estimated to be in the PRC [People's Republic of China] stockpile. The limit of the number of warheads is not restricted by nuclear materials production, but on what the Chinese perceive their needs to be."
Report No. DEB-49-84
National Security Archive: http://www.nsarchive.gwu.edu/