China Thursday renewed its call for rich nations to "show more sincerity" on financial and technological support as the two-week-long UN climate change conference drew toward a close.

"We, again, urge the developed countries to show more sincerity on funding, technology and mid-term emissions target to solve the developing countries' concerns and meet their demands in an effort to make the conference yield positive outcomes," said Chinese Foreign Ministry spokeswoman Jiang Yu at a regular news briefing.

Many countries are demanding a legally-binding climate treaty to be reached in Copenhagen, but schisms between developed and developing nations, mainly over emissions reduction and financing, are eroding the chances of such a deal.

Chinese Premier Wen Jiabao arrived in Copenhagen Wednesday for the UN Climate Change Summit. He will deliver a speech on Friday, the last day of the talks.

"Premier Wen will expound China's stance on how it deals with climate change in a positive manner and on international cooperation on climate change tomorrow," said Jiang.

"China supports success of the Copenhagen conference and has been making joint efforts with all parties in a constructive attitude in this regard," said Jiang.

She urged the parties to step up efforts for fair, reasonable, balanced and achievable results.