2020-08-18

How to improve classroom air quality?

The respiratory system of kids is really sensitive. It is very easy to get ill by even slightly polluted air. The classroom is a confined space […]
2020-08-18

How to choose, PVC,PE or Ductless

Fresh air system your designing is more important than your devices. Fresh air equipment is highly dependent on design and construction. The same set of equipment, […]