HEPA means “large-effectiveness particulate air.” The filter technology is the results of an industrial want that grew to become essential within the Atomic Age: superior volumes of very thoroughly clean air, important to the manufacture of microprocessors and various delicate instruments. กลิ่นไม่พึงประสงค์ เช่น ควันบุหรี่ น้ำเน่าริมทาง เป็นต้น The GermGuardian AC4825 has https://www.mannature.com/products/detail/airpurifier