... data according to international ENI 37 and GAI24 Self contained breathing apparatus Main Sections:From Drager Company Of German or ISI ... good properties. Cylinders work pressure,30Mpa .back frame for high strength of nonmetal materials, level pressure reducing valve output terminal ... ,pressure gauge,back plate and carbon fiber cylinder. Wearing quality 10.2kg.Mask(ISI):Conform to Asian people face, ...