Jiangyin Dongsheng Flange Co., Ltd. which is established on January 25, 2005, is located in the Yunting Industial Park Zone of Jiangyin City, Jiangsu Province Jiangyin City is No.1 of the 100 most advanced cities of China. In the territory of this city. There is a 35km long golden waterway of Changjiang River and the Shanghai Ningbo Expressway, the Shanghai- Beijing Expressway and several main railways run across here. The city connects Taihu Lake in the south. leans against Changjiang River in the north, be adjacent to Shanghai in the east and links Nanjing in the west,hence the geographical locationhere is wonderful and the traffic here is very convenient.