AASHTO M247 Standards Dual-Coated Glass Beads

Protect light reflecting glass beads is an integral part of road safety, by keeping the marking visible day and night. During day time the white road marking material gives the sufficient visibility as a contrast to the asphalt. In the night time contrast of the white line is not sufficient and must be improved by adding light reflective glass beads. The glass beads can be mixed into the road marking materials. During the life time of the marking the glass beads will reflect light and keep the line visible during night. Reflective glass beads can also be added to the road marking material during application to ensure the immediate night visibility. Chiye Glass Bead (Hebei) Co., Ltd, which was set up in 1998, is the biggest and specialized supplier of glass bead for road reflectivity in China now. It locates in Langfang city that is 50 kilometers far from southeast of Beijing, and around 100 kilometers far from Xingang port of China. The…