HEPA Stands for “superior-effectiveness particulate air.” The filter technological know-how is the results of an industrial need to have that grew to become essential while in the Atomic Age: substantial volumes of very clean air, crucial for that production of microprocessors along with other delicate devices. กลิ่นไม่พึงประสงค์ เช่น ควันบุหรี่ น้ำเน่าริมทาง waiting for link from Social Network Posts (25)