1.welding mask ce. 2. Electro-optical technology of Germany . 3.CE,ANSI ... DIN 9 to DIN 13. Detailed Production DescriptionAuto-darkening Welding Mask CE (EH-220/EF9848)1.Model:EH-220/EF9848, Configuration ... cells, two lithium batteries be changed.10. Switching time(welding mask ce):a) Light to dark: 1/25,000s.b) Dark ...