Eleven Japanese companies have been fined for fixing electrical devices' prices, said the nation's antitrust regulator on Thursday.
A Japanese consortium assembled from governments and companies on Kyushu arrived in Shanghai on Monday, where it signed agreements with 28 Chinese travel agencies to attract tourists to Japan.
Direct investment from Japan between January and June slumped 48.8% year-on-year to $2.4 billion, the Ministry of Commerce said, as some observers attributed this in part to political tensions.
Despite strained political relations between China and Japan, trade is flowing, two-way investments are recovering and the trend is expected to continue in the near future, experts said.
Japan raised its sales tax on Tuesday, a move likely to depress Chinese export prices to Japan while bilateral trade remains full of uncertainties amid political tensions.
Chinese solar companies are eyeing neighboring markets for business opportunities as Japan switches to solar power to cut its dependence on nuclear energy.
After a surge in 2011, Japanese investment in China continued to increase during the first five months of the year.
Sony is to open a new design center in China as part of the Japanese electronics giant's expansion plans in one of their fastest growing markets.
Chinese Vice Premier Wang Qishan met on Sunday with Japanese Finance Minister Jun Azumi before a Group of Twenty (G20) summit.
China on Wednesday issued a white paper on rare earth industry, the first of its kind in the country, to better protect the valuable resources.
China and Japan will start direct trading of their currencies on Friday in a move to boost trade ties between Asia's two biggest economies.