Ventilation

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【新冠肺炎】專業人士協會籲為樓宇安裝智能排氣保護裝置　有效為排出氣體消毒堵截源頭

Improving building ventilation can help us control the spread of COVID-19 during the winter months

消毒塗層長期殺菌？街市門口、學校軟墊噴完仍多菌

Insufficient Ventilation raises COVID-19 Risk

LWCEC TECHNOLOGIES