1. 1.      Product Features

ZH30/ZH15 self-rescuer is a equipment whom work underthe well. Provide the workers for fresh air whom under the wellwhen take place catastrophe and cause poisonous gas or hypoxia (gasblasting, coal and gas blasting, fire etc). This is a personalprotective apparatus for breathing system which can generate oxygenin an isolated close cycle by chemical reacting, and be used toprovide the wearer with oxygen when exploring a coal mine or in theenvironment where toxic gases exist or oxygen is deficient.Respirators apply to underground work, entertainment, firedisaster,

toxic gas environment, etc.

1. 2.            Structure and Principle

ZH30/ZH15 is oxygen candle born oxygen in early. Afteropening air sac quickly, utilize air pressure combine withCO2 and water vapor, throughchemistry , made into O2 forpeople to breathing. This pure oxygen take shape closed-circuitcirculation system through air sac, cooling nets, orifice plateetc, for people to breathe.