What's the difference between surface mail and express delivery? Tell me in detail?

Surface mail is slow delivery by the post office, which means land transportation, and it is the slowest means of transportation. That is, the mode of transportation by ordinary mail. It is divided into two ways: surface mail parcel and registered surface mail parcel. Surface mail is the slowest, at least one week to half a month, and it is impossible to inquire. The registered package is also the same journey, the only difference is that if you can't pick up the package within one month, you can go to the post office to check it according to the number. If you send a parcel by surface mail, it can't be delivered to your door. Instead, the people at the post office will give you a claim form after the goods arrive, and take your ID card and claim form to the post office to collect it.

Express delivery is a door-to-door service, which is divided into EMS of post office, e-mail treasure of post office and ordinary express delivery. EMS in the post office is also the air transportation method used by the post office. Although it is called express delivery, it is expensive and not necessarily faster than ordinary express delivery. However, the biggest advantage of post office express delivery is that it covers the widest area in the country and is convenient for receiving parcels in remote places. And other express delivery is too biased. If you live in a relatively remote place, I would recommend you to use e-mail. It is inexpensive and has a wide delivery range, but its disadvantage is its slow speed.

E-mail is an economic express of post office and a way of land transportation. The price is close to ordinary express delivery, and the speed is much slower than EMS.

There is also ordinary express delivery, which is the logistics and transportation of private enterprises. At present, the main express delivery companies are Shentong, Tong Yuan, Zhongtong, Huitong, Shunfeng, Tian Tian and Dayun. But the delivery outlets are different. I think the most outlets are Shentong and Tong Yuan. It is also divided into air transportation and land transportation. Air freight is cheaper and faster than post office express mail. Land transport by car is cheaper than express air transport, but the speed is similar to air transport. For example, from Beijing to Chongqing, it usually takes one or two days to express by air. And the land express delivery is also within two days.