The overall design is outlined with round and simple brushstrokes, absorbing the classic symmetrical aesthetics, and presenting the beauty of unity, harmony and balance; the combination of highlight black and frosted white forms the difference between color and touch, and enhances the product temperament; highlight The black form gathers from the outside to the inside, showing the meaning of gathering, implying the spirit of gathering, integrating technological innovation, the internal frame structure and modular design of the whole machine are adopted to improve the convenience. The original ion module adopts the design of plastic shell and metal inner parts to ensure the structural strength and avoid the operation discomfort caused by temperature difference. The module is screw-free installation to realize rapid maintenance. Lighting system is designed in the module, which greatly improves the user's observation field of view.