Manzhouli Customs is a deputy bureau-level customs directly under the leadership of the General Administration of Customs of the People's Republic of China. It is located in Manzhouli City, Inner Mongolia Autonomous Region, at the crossroads of the Eurasian Continental Bridge, with railways and highways leading directly to Lake Baikal in Russia. Responsible for the supervision and management of import and export business in Chifeng City, Tongliao City, Hulunbeier League and Xing 'an League of Inner Mongolia Autonomous Region. The jurisdiction covers an area of 450,000 square kilometers, with 6 first-class ports and 4 second-class ports, and the border line is 1.808 kilometers long.