Design of planarity, simple and reasonable product appearance differentiates the Daqo iExcellence 5XM series products from those of complicated design in the market and forms clear and high-end product style. No fixation screws on the front cover make customers install internal accessories without any tools and ensure the usability and safety. The iExcellence series products are highly unified in design through significant and sustainable design factors and gain significant brand recognition. Unification design enables 5XM series products more flexibility in future extension and diversified combination, offers more selections for customers.