Keep Omicron away from our students and staff – Replace the filters
To prevent and control coronavirus disease spreading in schools, Hong Kong government has announced the suspension of classes in kindergartens and primary schools from Friday throu
Air Filter of Energy Recovery Ventilator
ENERGY RECOVERY VENTILATOR Due to COVID-19, people are more concerned with ventilation rate of air-conditioned area, such as 6 air changes per hour for restaurants. Energy Re
