What is a postal code?A postal code is a numeric or alphanumeric code assigned by postal authorities to different areas for mail sorting and delivery.

Are postal code formats the same in every country?No, postal code formats vary by country. Some use only numbers, others use letters and numbers, and the length and rules differ.

How to look up a postal code for a location?You can quickly search for the corresponding postal code by entering country, city, or address keywords on this platform.

What happens if the postal code is wrong?Incorrect postal codes may cause mail delays, returns, or even loss. Always double-check for accuracy.

What is the standard format for international mailing addresses?Recommended order:
1. Recipient Name
2. Street/House Number
3. City/Region
4. Postal Code
5. Country (in English, uppercase)
Example:
Mr. Zhang Wei
123 Nanjing Road
Shanghai 200001
CHINA
Note: Write the address in English or the official local language, keep it clear, avoid abbreviations, and ensure postal code and country are correct.

Mail Packaging RequirementsMust be sturdy, moisture-proof, shock-proof. Fragile items should be labeled, dangerous goods must be packed according to international postal standards.

Document RequirementsInvoices, packing lists, shipping documents, export/import permits, etc. must be provided. Some countries require certificates of origin, health certificates, etc.

Mailing Dangerous GoodsMust be declared in advance, provide MSDS and dangerous goods identification. Some countries have strict restrictions.

Customs Clearance TipsDeclare item information truthfully, avoid prohibited items, pay attention to destination country import policies and taxes.

Cross-border Mailing TipsPlan mailing time in advance, choose express/registered/regular mail reasonably, pay attention to holiday route changes, consult professional logistics companies if necessary.