HEPA Means “substantial-efficiency particulate air.” The filter technology is the results of an industrial have to have that grew to become important in the Atomic Age: higher volumes of extremely clear air, very important for that production of microprocessors and other sensitive instruments. กลิ่นไม่พึงประสงค์ เช่น ควันบุหรี่ น้ำเน่าริมทาง เป็นต้น The filter https://www.mannature.com/products/detail/airpurifier