process flow
Retest the body of the white body→pre-cleaning→Load and hang→on-line→pre-degreasing→degreasing→Wash 1→Wash 2→surface conditioning→phosphorization →Wash3→Wash4→Pure water washing→waterlogging caused by excessive rainfall →cataphoresis→UF1→UF2→DI wash→waterlogging caused by excessive rainfall →down-line→Electrophoretic drying→HL-COOL→checkout
According to the material of the processed workpiece and the structure of the product, the preprocessing equipment can be divided into the following types： 
chemical treatment ： 
Automatic spray pre treatment—It is mainly suitable for the workpiece with large batch size and single shape and structure.，Widely used in automotive parts, engines, light industrial products, household appliances, plastic panels and so on.
Artificial spray pre treatment—Mainly suitable for small batch products, different shapes and various types of workpieces, widely used in heavy machinery manufacturing industry
Manual operation groove pretreatment—Applicable to the product volume, complex structure, workpiece with cavity, or hanging workpiece, have taken a basket dip tank treatment. 
mechanical treatment methods： 
Automatic shot blasting equipment—It is suitable for surface treatment of large quantities of structural parts. It is widely used in the manufacturing sector of construction machinery and components, workshop steel structure manufacturing industry and workshop steel structure manufacturing industry.
Artificial shot blasting equipment—For the month of small quantities, shape and structure of a variety of complex structures，It is widely used in large-scale special machinery manufacturing, shipbuilding industry and so on.
In order to prevent metal surface rust and corrosion, many products such as daily necessities, machinery, vehicles, electrical products are a series of processes, we have the most modern technology and rich experience to make the pretreatment equipment of different sizes to meet the requirements of our customers.