USA seller: HGN Auto Darkening Solar Powered Welders Welding Helmet Mask Hood With Grinding Function Review Mutantra June 28, 2019 June 28, 2019 No Comments on USA seller: HGN Auto Darkening Solar Powered Welders Welding Helmet Mask Hood With Grinding Function Review Full range UV/IR protection up to shade DIN 16 all time. “Grinding” can be selective by switch.AUTOMATIC, FAST REACTION & RECOVERY TIMES.in full conformity with CE and ANSI Z87 standards.Darkness shade control (DIN) from 9-13, Clear shade 4