In 2003, Darwin's British experts successfully developed IFDP air purification technology with high particle capture efficiency and low filtration pressure when doing particle capture experiments. This technology has greatly broken through the bottleneck of high ozone and low filtration efficiency of traditional high-voltage electrostatic technology, and has been quickly introduced to the world. It has a different working principle from the current mainstream HEPA filtering technology in the industry, achieving high efficiency, low power consumption and no consumables at all!