HEPA means “substantial-effectiveness particulate air.” The filter technological innovation is the results of an industrial need that turned essential from the Atomic Age: superior volumes of really clean air, very important to the creation of microprocessors along with other sensitive devices. กลิ่นไม่พึงประสงค์ เช่น ควันบุหรี่ น้ำเน่าริมทาง เป็นต้น In keeping with AHAM https://www.mannature.com/products/detail/airpurifier