China's current regulations: all goods weighing more than per cubic meter 1 ton are heavy goods; Less than 1 ton is light bubble goods. Then calculate the liner freight according to your calculation method above.

Calculation of heavy cargo and cargo throwing in the air;

Volume weight = 12/6=2 tons. The actual weight is greater than the volume weight. This is a heavy cargo, so the charge ton is 8 tons.

Or 1 m3 = 167kg Volume weight =13 *167 = 2004kg = 2.004 tons.

On the contrary, it is throwing goods.

Air express calculation:

First freight+(weight (kg) × 2- 1 )× subsequent freight.

For example, if the first weight of a 7KG cargo is 20 yuan /kg and the second weight is 9 yuan /kg, the total freight is:

20+(7*2- 1)*9= 137 yuan.