... a kind of powered air purifying solar auto darkening welding helmet that can proof dust and gas ... , and durable in life, air flow supply big and the air flow can be regulated, clockwise regulating high ... harmful ill odors. 1 Model Of Powered air purifyingAFR-636/EF9040 2 Configuration ADF ModelEF9040 3 ... 350mm*260mm*220mm18Materia PP or PA 19 Colour Can Choose blue,green,silver,black,yellow,red, ...