Ask about packing. There will be great bumps in the long-distance mailing process, and the goods need to be packed.
If you don't contact the payee clearly in advance, you should write down the model and color of the pen in detail in the "postscript" Some pens are the same model, but the sizes are still different.
It is very important to write down the name and address of the recipient and the detailed address of the recipient, because most shippers will not apply for returning the package, so if the postman can't find you, the package is likely to stay at the post office.
Choose the postal service used by the other party when delivering goods, such as surface mail, registered mail, express delivery or EMS.
Carefully calculate the quantity and amount to be issued. If the seller is not responsible for the postage of delivery, then you should attach the corresponding postage.