West Chang 'an Street, Yongding Town 1

West Chang 'an 1 Yongding Town, postal code: 102308, address: Genan Road, Cao Zhuang, Mentougou District, Beijing.

PostalCode (English: postal code, also known as postal code) is a coding method for a country or region to divide the whole country in order to realize the automation of mail sorting and the digitalization of postal network, and to speed up the delivery of mail. Postal coding system has become one of the standards to measure a country's communication technology and postal service level.