Renmin Road, Tongzhou District, Nantong City, Jiangsu Province. Baidu map shows that Nantong Tongzhou Sanyu Down Jacket Wholesale Market is located in Renmin Road, Tongzhou District, Nantong City, Jiangsu Province. Tongzhou District is a municipal district of Nantong City, Jiangsu Province, and one of the main urban areas of Nantong City. It is located in the southeast of Jiangsu Province and the northeast wing of the Yangtze River Delta.