... signs 1. widely used in pubilic security, 2.used for many ways like fire warning/ ... alarm etc 3.OEM/ODM metal security warning signs 1.Material : Material include: PVC, acrylic, ... sign, male female sign, door sign, road sign, nameplate, equipment nameplate, various badges, etcCustom-make is always welcome, as per ... can have the reply within 24 hours. metal security warning signs