1, Baotou Iron and Steel Group Co., Ltd., China No.2 Metallurgical Group Co., Ltd., Baotou Daan Iron and Steel Co., Ltd. and Inner Mongolia Dazhong Mining Co., Ltd. all need to wear dust masks.
2. A lot of dust will be produced in industrial production. Workers who work in dusty environment for a long time have more dust particles in their respiratory tract, which will affect the health of the respiratory system and lead to respiratory diseases, bronchitis, emphysema and even occupational diseases. Dust mask can effectively filter dust and reduce the harm of dust particles to respiratory system.