1) In accordance with SOLAS 1974/1996, LSA, MSC.81(70) 2) CCS/EC approval 1 Introduction1.1 Main applicationRHZK Self-contained Compressed Air Operated Breathing Apparatus (hereunder shortened as the Apparatus) is a new model of self-supporting open respirator, which is widely used in fire-fighting, chemistry industry, vessels, petroleum industry, smelt, mine and transportation. It is a high- ...