Disposable dust mask: 1.Material: Polypropylene 2.Specification:one layer pp 3.Tpye:120gsm,140gsm,160gsm,180gsm,200gsm Disposable dust mask:1.Material: Polypropylene2.Specification:one layer pp3.Tpye:120gsm,140gsm,160gsm,180gsm,200gsm4.Application:used in food industry,personal health ,food powder factory against air pollution.Moq:50000pcs dust mask