reflective traffic sign boards. 1.good reflectivity. 2.road signs. 3.safety signs. 4.service life:3-10years. Application: 1. Road signs, traffic signs ... , roadway safety signs, highway signs, freeway signs.2. Other road safety facilities, temporary traffic signs, crossing signs.3. Advertisement signage ... done by request)Feasible operating temperature: 5°C-30°C. reflective road warning board