... modular blocks 6. Long durable years 7. High corrosion resistance 8. High flame retardancy,Fire prevention 9. High static conductive property ... ,80-80kN,100-80kN,120-120kN,200-200kN,400-400kN,600-400kN,600-600kN,800-800kN,1000-1000kN/m.All Products can ... mining test,USA ASTM test,EU CE test. Mine Grid 600-400kN/m for Improving Safety