Reduce the list, select first 2 letters of the city:
Listing cities (83 place(s)). Select the City to see the postcode(s):
Listing cities (83 place(s)). Select the City to see the postcode(s):
Position: Postcodes > China > Shandong/山东 > W.... >
Postcode finder: China, List of the cities starting with W. China Shandong/山东 Postcodes (Desktop version).