这个装置只需要依靠我们自身的重力作为驱动，既能保证洗净程度，又能节约90%的水，整个过程完全无能耗，节能环保。
This equipment is only driven by our weight, which can not only guarantee we wash our hands clean, but also save 90% of water; the entire process has no energy consumption and is energy-saving and environment-friendly.