Air Quality

Indoor better than Outdoor? 

Water Quality 

Is household drink water safety? 

In the past, news report comparison between indoor and outdoor air quality, outdoor air quality may be better than indoor air quality, especially lack of ventilation environment.


People stay more than 70% of our time in indoor environment, poor indoor air quality environment lead people discomfort, ill health or other respiratory disease.


Besides air, water also is important thing for life. In the past, Hong Kong happened household water quality problem such as lead in drinking water incidents.