Chinese President Hu Jintao has called for more efforts to promote independent innovation and upgrading of the industrial structure during his inspection tour to Shanghai which ended Sunday.

Hu visited scientific research bases, industrial parks and workshops of enterprises during the four-day tour, making investigations and research on the transformation of the mode of economic growth and work to promote sound and fast economic and social development.

Hu stressed promoting independent innovation and making breakthroughs in core technologies. Such breakthroughs would provide strong support for the transformation of the mode of economic growth, he said.

During his visit to Commercial Aircraft Corporation of China, Ltd., Hu said that the Communist Party of China (CPC) Central Committee had made a strategic decision to develop large passenger aircraft. He expressed hopes that the company stick to independent innovation and succeed at an early date.

At the Spreadtrum Communication, Inc., a high-tech company founded by returned overseas students, Hu said independent innovation is the lifeline of a company. He told the company staff "I hope you could make further breakthroughs in core technologies, so as to boost China's communication industry."