Before work should open ventilation equipment, open indoor door window maintain indoorventilation.
工作前应开启通风设备，打开室内的门窗保持室内通风良好。
2
The fan are widely used in industrial and mining enterprises, large buildings, hotels, restaurants and other indoorventilation.
该风机广泛用于工矿企业、大型建筑物、宾馆酒楼等室内通风换气。
3
Moreover, we should pay attention to their bodies, because of spring moisture, so that ground laundry, ground drying is, pay attention to indoorventilation, to prevent epidemics in spring.