Plus, they're an energy-free alternative to other air cleaning devices. In other words, a truly green solution.

而且，这种方法是可以替代其他空气清洁设备的零能源方法。换言之，这是真正的绿色解决方案。

Water and air cleaning systems complete an independent and sustainable ecosystem.

水和空气净化系统完善了一个独立且可持续的生态系统。