Surface mail is a communication method of mailing letters. When sending ordinary mail, you need to use a standard envelope. Compared with registered mail, ordinary mail does not give receipts, does not accept inquiries and is not responsible for compensation.
2. registered mail
The price is slightly higher than that of ordinary mail, faster, generally not lost, and there is a receipt. The security is relatively flat, and the letter is guaranteed. No one accepts it and returns it to the sender.
3、EMS
The mailing range is wide, reaching 2 10 destinations worldwide. Free of fuel and remote surcharge, unlimited in size, suitable for light delivery, strong customs clearance and express mail.
Extended data:
Articles prohibited by express mail.
1. Documents and articles whose circulation or delivery is prohibited by national laws and regulations;
2, explosive, flammable, corrosive, radioactive and toxic dangerous goods;
3 reactionary newspapers, books, windows or obscene articles;
4. Various currencies;
5. Articles harmful to public health;
6. Perishable goods;
7 live animals (except bees, silkworms and leeches, whose packaging can ensure the safety of delivery and staff);
8, improper packaging, may endanger personal safety, pollution or damage to other mail equipment items;
Baidu encyclopedia -EMS
Baidu encyclopedia-ordinary letter
Baidu encyclopedia-registered letter