... ;2mm 3mm 4mm 5mm length:10m width:1000mm weifang hongyuan waterproof materials co.,ltd ,is a leading manufacture producing all kinds ... of waterproof materials ,my company web which is www.hongyuan.cn our ... is of high elasticity with best performance among high polymer waterproof material ,it is made of ternary ethylene_pro_pylene rubber ,it is ...