Specification: Diameter50mm*height50mm
                         diameter of sphere30mm*height10mm
Material: Tempered Optical Glass of Highly Crystal Silicon
Origin：Shandong Province·3W CHINA
Color：White Yellow Brown Green Blue Red
Retro Reflective Material：Silvering Material
Protective Material：Metallic Compound
Retro Reflective Angle：360^o          N.W.: 100g±10
Carton Measurement: 330mm*280mm*230mm
National Standard Turnover Attrition Rate: 3 %
Packaging G.W.：13 kg                   N.W.：12kg
Packaging Quantity：120 units      Hardness：170±5
Weathering Resistance Properties：＞16280h
Anti-collision Resistance：≥16ton
Characteristics
1. Excellent weathering resistance and long life span
2. Fine wear resistance and chemistry stability. They are able to withstand the erosion of
　tire, sand, different kinds of solvent and oil fuel. Moreover they also have strong resistance
　to acid rain as well as salt fog. As a consequence, they can be used in various kinds of
　severe road conditions for a long time.
3. Safe, reliable and strong warning function.
Technology Index
1. Glass curb markers are made from tempered optical glass of highly crystal silicon plating
　the silver reflective layer and its reverse reflection coefficient is over 80mcd/LX.
2. High compression strength. Its pressure- resistant degree is more than 157KN. It is well
　proved that they are still in good condition after being largely installed in the experimental
　road withstanding the pressure of large container loading vehicles for more than one year
3. Its economic effectiveness is so obvious that worth widely using by the masses.
4. This product has  already been applied for the patent of People's Republic  of  China  and Geneva.