The postcode of John Wan, Dongguan City.

Wanjiang District is located in the center of Dongguan, Guangdong Province. It is a city full of historical and cultural atmosphere and one of the famous historical and cultural cities in China. There are many historical sites, scenic spots and unique cultural atmosphere here, which makes it a tourist attraction. There are also a large number of industrial and commercial enterprises in this area, forming a strong economic strength.

As a prosperous city, it not only has many conveniences, but also has excellent postal services.