1.Belarus Welding helmets. 2.CE,ANSI Z87.1 certifications. 3. ... of Germany. Products meet the indicatorsBelarus Welding helmets1. Model of Belarus Welding helmets:EH-407, Configuration ADF Model: EF9040.2. ... cells, two lithium batteries be changed.10.Switching time of Belarus Welding helmets:a) Light to dark: 1/25,000s. ... 2 year limited.17. Provide OEM: YesFeatures EH-407/EF9040 Belarus Welding helmets