... 1.EMC vent bolt Introduction EMC vent bolt from Pan-Asian Microvent technology have a special structure for ... against dust, water, salts and other corrosive liquids .Pan Asian ePTFE membrane combined with copper or stainless steel ... repellent ,moisture- and vapor-permeable ,chemically inert ,non-shedding ,UV-resistant ,temperature-resistant benefitsProtection against dust, water, salts and other ...