Tianjin Marine marine safety shoes safety shoes _ where _ Procurement ship goods to sell selected Yada Yada Trade and Industry provided by the Trade and Industry. Tianjin Adar Ltd. (www.yada-cbwz.com) had been "Business League certification", please rest assured purchase through the entire network, click on the page check "Business League certification icons" of our authentication information. You can also click on the "Business Alliance Service Icons" on this page directly contact our customer service! [Adar Industry and Trade to recommend star product --- Marine Labor] N Series: Protection of non-oily suspended particles no time limit R Series: Protection of non-oily suspended particles and suspended particles oily sweat time eight hours P Series: Protection of non-oily suspended particles and at no time suspended particles oily sweat carrier particles is somewhat oily, and these substances will reduce electrostatic nonwoven fabric attached to the electrical marine safety shoes offer so tiny dust penetration marine safety shoes where to sell, so the anti- oil aerosols through a special filter to static treatment, in order to achieve the purpose of the anti-fine dust. So every series has carved out a three level: 95%, 99%, 99.97% (ie, referred to as 95, 99 marine safety footwear models, 100), so a total of nine categories filter. [Adar Industry and Trade to recommend star product --- Marine Labor] close together extent: masks prevent side leakage of air through a mask designed to prevent the gap with human face is drawn through the filter without considering technical requirements. Like water, like air, where it first to where the flow resistance is small. When the shape and face masks are not close together, like hazardous materials in the air will never leak into the adhesion of marine safety shoes, into the human respiratory tract. So, even if you choose even the best filter masks. Can not protect your health. Many foreign regulatory standards, workers should regularly mask adhesion testing. The purpose is to ensure that the appropriate choice of large and small workers respirators to wear masks and follow the correct steps.