The institute’s secretary-general Wanchai Panomchai said it will cover air purifier used in households, buildings or malls.
Under the new standard air purifier can be of no more than 250 volts and should be able to remove at least 70 per cent of the ultrafine PM2.5 dust particles from the air.
Published : April 28, 2020
By : THE NATION
Published : Jun 29, 2022
Published : Jun 29, 2022
Published : Jun 29, 2022
Published : Jun 29, 2022