HEPA Stands for “substantial-efficiency particulate air.” The filter engineering is the results of an industrial need to have that turned significant within the Atomic Age: substantial volumes of really clear air, essential to the production of microprocessors together with other sensitive devices. กิจกรรมเพื่อสาธารณะประโยชน์ของบริษัท The shortage of oversight is a concern https://www.mannature.com