As noted in our guidebook to prime-rated peaceful air purifiers, we advise cross-checking claimed decibel degrees with purchaser groups like Peaceful Mark, a United kingdom-primarily based unbiased international certification software that identifies the quietest goods. กิจกรรมเพื่อสาธารณะประโยชน์ของบริษัท Based on AHAM , your air purifier must have a CADR ranking similar to https://mannatureairpurifier.com/