Wafangdian (Chinese: 瓦房店; pinyin: Wǎfángdiàn) is one of the three "northern county-level cities", the other two being Pulandian and Zhuanghe, under the administration of Dalian, located in the south of Liaoning province, People's Republic of China. The city is famous for its ball bearing industry. Wafangdian Bearing Factory is the largest bearing manufacturer in Asia and was initially built by the Japanese during World War II. Its area is 3,576.40 square kilometres (1,380.86 sq mi) and its permanent population as of 2010 is 942,197, compared to 1,024,876 registered with hukou permits.