level, smooth and fine film appearance; good bath solution stability and adaptability to long replacement cycle; adaptability to cold and hot rolled steel sheets and galvanized substrates and strong shrinkage cavity resistance; high throwing power, good internal and external homogeneity and little film thickness difference; strong rust protection and good secondary adhesion after salt spray on workpiece; good film fullness and good substrate hiding power; excellent film leveling property and good binding force and matching with floating coat and finishing coat; ultra low curing temperature and full curing at 120-140℃. as an energy conservation and emission reduction project absolutely valued and supported by the national government, it can save about 60% energy consumption in the coating process and benefit the nationa, the people and the enterprises; particularly apply to the workpiece that cannot be baked at high temperature, especially the binders of rubber and metal as well as zinc-aluminum alloy materials, such as refrigerator and air conditioner compressors, automobile absorbers and all kinds of steel pieces.