chemical additive

LW-99 Nickel-free and Fluoride-free Medium Temperature Sealing Additive is a kind of colorless or light amber transparent liquid which has excellent sealing effect for aluminum oxidation film. It does not contain heavy metals, which not only will solve the problems caused by heavy metal in waste water treatment process, but also can avoid aluminum surface greenish phenomenon which caused by the oxide film absorbing nickel salt during the sealing period. LW-99 is applicable to the transparent film, polishing, electrolytic coloring film sealing and it has the advantages of simple operation, environmental protection, water-saving, free of treatment to fluoride and nickel irons in waste water processing which can be cost-saving.

LW-19 chromium-free passivation additive is a kind of colorless transparent and environmental protection additive. It applies the composite salts to form the uniform chemical conversion film on aluminum surface which can effectively enhance the coating film adhesion and corrosion resistance to the surface and the coating. LW-19 is chromium-free and in line with the green environmental protection requirements, can completely replace the traditional chromium passivation coating for aluminum surface treatment, it can also be used to spray or immersion.

LW-15 Film-formation Additive is a kind of brownish liquid which can form a bright yellowish film on the surface of aluminum and aluminum alloy. This film has excellent corrosion resistance and good adhesion with coating and plastic coating.

LW-10 Medium Temperature Sealing Additive is a reddish brown to brown liquid which is for aluminum profiles oxidation film sealing treatment, the sealing quality is stable and of wide application range, the profile surface texture is superior after sealing treatment.

LW-150 Film-formation Additive is a kind of green liquid which is capable to form a colorless or light blue film on the surface of aluminum and aluminum alloy. This film has excellent anti-corrosive resistance and adhesion with coating.