Features: This type respirator is made by natural rubber which is comfortable for the wearer without stimulating the skin and can be used for a long time due to low breathing resistance and high efficiency of filter cotton. Usages: It can be applied to protect the wearer from a lot of dust produced in the workplaces like building, mining, ironing, and material processing. Dust is the enemy of human health. The dust is the biggest enemy of our human being. The finer the dust, the easier people can inhale. It can enter respiratory directly into the alveolar deposition, if exists long, it will accumulate pneumonia or other pneumoconiosis disease. Choose our products, choose the health.