2 14426。 According to the public information of official website Post, the postcode of xinqiao town, Jiangyin City, Wuxi City, Jiangsu Province is 2 14426. China Post Group Co., Ltd., referred to as China Post for short, was established on 1995 and was formally established on June 29th, 2007. Its headquarters is located in Financial Street, Xicheng District, Beijing.