Compare the characteristics of different logistics modes with examples.

At present, the first push for logistics enterprises to transport bulky goods out of minerals, timber and metals is express mail, which is an intermediate between ordinary road transportation and air transportation. General professional logistics companies have very low freight rates, which are at least 2 to 3 times cheaper than air freight. If it is well managed, the time limit is not less than the speed of air transportation within the range of 1000 km, because air transportation has more and more complicated links than express logistics, and the probability of pulling goods is higher because of weather and load problems. For example, the air freight from Shenzhen to Shanghai is about 1 to 2 yuan/kg, which is 4 to 5 yuan/kg. Generally, private transportation lines belonging to logistics enterprises or freight stations are not suitable for long-distance transportation, but only for short-distance transportation in the province. The price is generally the car price, and the LTL price is unknown. Railway transportation, long-distance and large-volume transportation, has the slowest speed and high damage rate. Grassroots production and processing enterprises are not recommended. Why is the railway slow? Because the railway load is too high and the dispatching time is too long, grouping is very troublesome.