(1) The humidity of the wooden shaft and board of the packaging box shall not be greater than 18%, and the temperature of the packaging aluminum coil shall not be greater than 45 ℃.
(2) When transporting from a low-temperature area to an area with high temperature and humidity, do not immediately open the sealed packaging.
(3) Aluminum coils should not be placed on the roofs of workshops and warehouses where there is rain or snow leakage.
(4) Strengthen the management of air drying to ensure that there is no water in the compressed air.
(5) Strengthen the management of rolling oil and control its water content below 0.04%.
(6) The packaging of aluminum foil rolls should be sealed, and each roll should be filled with an appropriate amount of desiccant.