Environmental silane metal surface treatment series syrup, is a phosphate-free, non-COD / BOD, heavy metal-free environment-friendly pre-treatment agent, using a simple and economical to operate, no sediment transport and clean-up, is the company for the current environmental protection requirements under increasingly stringent pre-processing environment, similar products from domestic and foreign technology, developed an easy to use, excellent overall performance environmentally friendly processing solution. Because phosphorus and heavy metals, in line with the EU ROHS environmental directives, especially for steel, zinc and aluminum surface treatment can enhance the adhesion of the coating, rust and corrosion resistance, and a variety of paints, powder coatings can match, energy saving, environmental protection and the advantage of reducing costs.