... The Nickel silencerMaterial:BronzeItem Code:SEB-A-1-6,SEB-A-1-8,SEB-A-1-10,SEB-A-1-15,SEB-A-1-20,SEB-A ... kind of products can be used on the equipments in order to reduce the noise and filtering the dusty or the air or oil or water ... which can't be work with the equipments at the same time, to reduce the noise is other function. SEB-A-1 Sintered and Plate ...