move sure to raise pressure on Beijing to act when it accuses Japanese vessels of violating those boundaries.
The dispute has sent China-exposed Japanese stocks down heavily on the Tokyo stock market, raising concerns about any wider impact on economic and trade ties between the two countries. Platinum prices also fell, partly on the disruption to Japanese car plants in China, traders said. The precious metal is used as an auto catalyst.
China, the world's second-largest economy, and Japan, the third-largest, have total two-way trade of around $345 billion.
There is no talk of Japanese firms withdrawing investment from China but some experts believe anti-Japan sentiment could prompt firms to rethink China investments in the longer term.
Withdrawal is impossible but the cost of doing business in China clearly has become much higher so that cost calculation should affect (decisions), said Yoshihide Soeya, director of the Institute of East Asian Studies at Keio University in Tokyo.
Mazda Motor Corp has temporarily halted production at its Nanjing factory, while Mitsubishi Motors Corp said it would also halt operations at one of its China factories on Tuesday. Both have joint ventures in China. Yamaha Motor Co also said it was suspending operations at four plants in China.
Toyota and Honda said arsonists had badly damaged their stores in the eastern port city of Qingdao at the weekend, prompting Toyota to halt operations at some factories in China.
Electronics group Panasonic Corp said it was closing three China factories after two were attacked by mobs and a third, in southeastern Zhuhai, was sabotaged. Japan's Omron Corp halted its automotive parts plant in Guangzhou, southern China, as a precaution.
Japanese supermarket operator Aeon closed all but five of its 35 stores in China on Tuesday, while clothing retailer Fast Retailing shut about a quarter of its 145 Uniqlo stores in mainland China for the day. Building machinery maker Komatsu halted three plants in Shandong province.