... fire c)Act as a barrier to noise steel security doorfeatures:1) Material: cold-rolled steel2) Frame outer size (H x W ... , peephole, anti-frozen rubber seal and etc.8) Infilling: honeycomb material or polyurethane9) Applicable for the entrance of houses or flats10 ... CunDong street , HuangQi Town , Nanhai District ,Foshan City, China Steel security door(027)