Dayi Branch of Changshu Market Supervision Administration. The catering business license of Changshu Dayi is handled in the Dayi Branch of Changshu Market Supervision Administration. The materials required to register a company include: the original ID cards of the legal representative, the financial officer and the supervisor, the ID cards of shareholders if any, the articles of association of the company and the address certification documents of the business premises. The Dayi Management Area of Yushan Town, Changshu City is located in the hinterland of the Yangtze River Delta. It is located in the northwest suburb of Changshu City, adjacent to Wangyu River in the south, Zhangjiagang in the north and Shang Hu Town in the west. National Highway 214, Su Shiwang Line and expressway along the Yangtze River pass through the area. On May 26, 2114, Dayi Town was withdrawn and merged into Yushan Town.