ISO9001:2000 GB2811-2007 This is our newly researched safety helmet with tassel air vents . Plastic convenient safety helmet Plastic convenient safety helmetStandard:GB2811-2007 ISO 9001:2000Material:ABS(HDPE,PP is available)Color:yellow,red bule,white,orange,and so onFeature: wide top with rib,made in highly impact resistant and self-extingushing ABS resin to protect from molten metal spitting. ...