1.rubber pad for rail 2.wear-resistantaanatural aging resistant,cold-resistant,heat-resistant ... .material:rubber2.function,protect tack,sleeper and roadbed,,electrical insulation for signal system3.advantage, wear-resistantaanatural aging resistant wear-resistantaanatural aging ... (less than 50 kg) or as your request 6. stored in clean, ventilated place. Don’t be direct sunlight, keep away ...