The PH value of the VCI film should also reach 6.4 pH 12. Does this pH value refer to the PH value after the VCI particles combine with water molecules after packaging with the VCI Film?

The pH value requirement for VCI Film is 6.4 < pH < 12. This does not refer to the pH value after the VCI particles combine with water molecules after packaging with VCI Film, but rather the pH value range of the VCI Film itself or the anti-rust agent material it encapsulates.

Specifically, this pH value requirement is to ensure that the VCI Film does not cause corrosion or adverse reactions to the metal surface during use. The vapor phase rust inhibitor in the VCI Film, after coming into contact with the metal surface, will form a protective film on the metal surface through the vapor phase diffusion effect, preventing the metal from oxidation and corrosion.