The advantages on the surface of the printed version of the hanging calendar and desk calendar are that there is no metal product that has both high oleophilicity and good hydrophilicity. Even if any metal product has only one wetting characteristic, inspired by adsorption rules, it can still be changed. This can be changed, and of course, it can also be partially changed, which can enhance its lipophilicity and hydrophilicity. Practice has shown that the wetting properties of zinc and aluminum are relatively balanced, with both a certain degree of oleophilicity and hydrophilicity, which helps to make corresponding changes according to demand.

It is precisely due to the general requirements of chemical applications that zinc and aluminum are commonly used as plate materials nowadays.

To achieve the goal of change, the layout needs to undergo a series of physical and chemical processes. This is the main reason for the emergence and development of offset printing. Everyone is aware that offset printing began with lithography. During lithography, this rule of change has been controlled by users, and even now, with the diversification of offset printing, this rule still has practical significance, only with more effective and diverse methods.