Silylation treatment is a process of surface treatment of metals or non-metals using organic silane as the main raw material. It is a relatively mature pre-treatment technology that can replace phosphating. Compared with traditional phosphating, silane treatment has the following advantages: no harmful heavy metal ions such as nickel, zinc, manganese, etc., no phosphorus, and no need for heating. The silane treatment process is slag-free, has short treatment time and is easy to control. There are few processing steps, which can eliminate the need for surface conditioning and passivation processes. The bath fluid has a long service life and is easy to maintain. Effectively improves the adhesion of paint to the substrate, and can be used to linearly treat various substrates such as iron plates, galvanized plates, aluminum plates, etc.