HEPA stands for “large-efficiency particulate air.” The filter technology is the results of an industrial need that became vital during the Atomic Age: high volumes of very thoroughly clean air, critical to the manufacture of microprocessors as well as other delicate devices. ตัวเครื่องอาจค่อนข้างใหญ่ไปสำหรับผู้ใช้บางท่าน The Blue Pure 211+ aced our checks, https://www.mannature.com