China will not commit to specific emissions-reductions targets but put the onus on the "unshirkable responsibility" of developed countries to take the lead on climate change, according to a new policy document. In the country's first full response to US President George W. Bush's new climate change policy, China said it is still developing and its need for economic growth still come first, the Financial Times reported. Ma Kai, chairman of the National Development and Reform Commission, said the new plan has many positive features but noted that new accords should build on the existing Kyoto Protocol. Ma said China may soon be the world's biggest carbon emitter, but needs to develop before adopting mandatory emissions cuts. He also said that countries that import energy-intensive Chinese products should take some responsibility for the emissions caused by their manufacture. Moreover, Ma said, developed nations should be more willing to share technology. "We have heard a lot of thunder but we have yet to see the rain," he said.