economical, comfortable,easy to use Disposable Dustproof Respirator1.Products feature 1.No-oil,Particulate respirator, open cell foam nose cushion, nose clip 2.Protective against non-oil particulated. Soft nose clip and foam cushion perfectly fit the face. 2.Products technican data 1. Applications: factory, construction 2. Size: customized 3.Seal: foam 4.Exhale valve: no 5.Packing: 30 EA/Box 10 ...