... , Safety Helmet, Welding Mask, Dust Mask, Respirator, Earmuff & Earplug etc,JINHUA HENGFA INDUSTRY AND TRADE CO., LTD is established in 1999 with ... :108x50mm)3.indirect vents ,protect against dust and liquid4.used in gas welding, cutting and brazing operations5.flip-up front design ,easy to ...