... by our advanced technology is widely used in clinical respirator, protection respirator, and dust proof respirator. Products coincide GB6223-86Udc614.89 ... , meet different clients demands to produce all kinds of respirator protection material.*Models and ParametersMask cloth --filter material for mask use ... -MA50FFP2 70 0.6 98.99 4.5 Hight efficiency protection respirator filter cloth