Caitu binding force between the coating and the substrate directly affects the color coating of coating adhesion, chemical processing state of the substrate surface and therefore has a direct impact on the extent of binding of the coating and the substrate, good pretreatment process can produce a stable substrate surface conversion coating Shandong Cai Gang Vol offer, not only can improve the corrosion resistance of the base material can also improve the binding force between the substrate and the coating. Tests showed that different pretreatment process for coating adhesion caitu aging performance is significantly affected. Different vendors pretreatment formulation and process parameters are not the same, so for the cleanliness of the substrate surface grease, the substrate is the extent of corrosion cleaning agent, conversion film itself toughness, corrosion resistant conversion film plays the role of elements etc. Aging performance coating adhesion will have a significant impact, further research in this article have not been. A high quality substrate Either roll coating process using the Color of substrate technology requirements are getting higher and higher. Most color-coated steel base should be smooth spangle, zero spangle galvanized steel coils or galvanized steel coil, there is a tendency to increase in recent years in galvanized aluminum, aluminum-zinc alloy coated steel sheet as a substrate; film uses color-coated cold rolled coil substrate do some high-end products are also made of stainless steel substrates. Whatever the substrate, on its surface, shape and dimensional accuracy requirements are very high adoption. 2 Improved pretreatment pretreatment and coating the substrate more closely cooperate with the new volume wholesale Color pretreatment system, increase the stability of the pretreatment solution, enhanced corrosion resistance and color-coated flexible color Which is good coil, while reduce environmental pollution. In particular, some countries do not allow the use of clearly defined Cv + pretreatment solution containing 6, has been used in containing Cr + 3 or other types of pretreatment solution, although the price is slightly higher this pretreatment solution (approximately 20% high), but it is very beneficial for environmental protection and reduce the environmental costs. Shandong Binzhou color steel coil, Jinhong Run steel (certified), Baoding color steel roll provided by Boxing Xingfu Town 金宏润 Steel Industry and Trade Ministry. Boxing Xingfu Town 金宏润 Steel Industry and Trade Ministry (www.bxjhr.com) (www.bxjhr.com) is a leader in Binzhou, board (with) wood, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Jinhong Run Steel leadership with the staff warmly welcome all inquiries negotiations to create a better future for the steel Jinhong Run.