Indoor Air Quality Check Rooms to be checked:6 rooms or more with a gray/beige colour

with a gray/beige colour

you may also consider WEAR fabric which is more comfortable (90% cotton) but shields less than STEEL-GRAY fabric

The rental fee for the Duplex IV Professional is HK$ 1

The renter must keep and return the  shielding canopy in good condition

Indoor Air Quality Check Rooms to be checked:6 rooms or more with a gray/beige colourIndoor Air Quality Check is a home visit service that combines the Mould Test with the Carbon Dioxide (CO2) and Formaldehyde Check. The former helps to identify excessive fungal growth and active water damage in the surroundings while the latter assesses levels of carbon dioxide and formaldehyde, one of the most common volatile organic compounds (VOCs). High humidity and water damage can induce mould growth, which in turn can lead to respiratory, skin