Xi' an taijin business. According to the relevant information, Xi 'an Taijin Trading has become the main service provider of Xi 'an Assured Grain and Oil Factory, the vice-president unit of Shaanxi Catering and Cooking Association, and the largest distributor of COFCO in northwest China. Xi 'an, formerly known as Chang 'an and Haojing, is the capital of Shaanxi, the core city of Guanzhong Plain urban agglomeration and the starting point of the Silk Road.