The products used quality raw materials (polyethylene) refined and into, has cold, and anti-Sun, and anti-aging, and anti-pressure, features; products widely application Yu Highway shunt, and road construction, and traffic police shezhang, and highways construction, and parking, all guarantee vehicles security of places; the products sets has white reflective film, even in night are can is striking is effective of up to protection security of role, is traffic, and construction, and public, will was of security protection products. Main specifications of 50cm, 75cm, 78cm.