Benson optical electronic Limited was found in 2005,It factory locate in 2nd industrial park xiaobian,changan town, DongGuan city,Guangdong province, China. The factory covers the area of 1,300 square meter,we are a professional safety and protection product manufactory,our product include auto-darkening welding helmet,welding helmet filter. the products great for use with MIG/MAG, TIG and ARC welding, the product meets ANSI Z87.1, CSA Z94.3, EN379, EN175 etc.