HEPA Means “large-efficiency particulate air.” The filter know-how is the result of an industrial need to have that became essential inside the Atomic Age: substantial volumes of incredibly clean air, essential with the creation of microprocessors and also other sensitive instruments. ฝุ่นละออง, เชื้อรา, ละอองเกสร และแบคทีเรีย As outlined by AHAM , waiting for link from Social Network Posts (3)