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face masks and demand valves, CPS can be , either separately or together, for tightness in negative and positive pressure ranges with expiration valve set to tight. With two pressure gauge(minus 30 or plus 30 bar and 0 to 25 bar). mask tester,mask testing machine,testing machine wireless camera, flashlights, professional binoculars, training manikin, firefighting equipments, mountain rescue equipments, diving equipments, victim detector