The package of goods shall be firm and intact, which can prevent the package from cracking, leakage and loss of contents during transportation; Prevent damage or deterioration of goods due to stacking, friction, vibration or changes in air pressure and temperature; Prevent injury to operators or contamination of aircraft, marine containers, ground equipment and other items. The package shall not only be suitable for the nature, state and weight of the goods, but also be convenient for handling, loading,.