To combat southern China’s humid, acid rain, and strong UV environment, Jinheng Windows & Doors employs the industry-leading fully automatic “seven-coat five-bake” electrostatic powder coating process. The pretreatment line includes nine stages: degreasing, chromating, and cleaning, ensuring optimal surface adhesion. Coating utilizes Swiss Gema spray guns with German-brand eco-friendly epoxy resin powder coating, cured through five gradient temperature increases, ultimately forming a uniform coating with 3H hardness. This process not only achieves over 6,000-hour corrosion-free performance in neutral salt spray testing but also offers more than 50 durable color options, truly unifying color and weather resistance.
