1.ISO 9001:2008 2.notoxic,no smell 3.Made by brand new pvc material 4.Good quality passed ROSH and PAHS 1.Being light in weight,with good resistance to the hard weather condition and minus pressure, and small bending radius.2.Excellent resistance to pressure, external impacts,gases, light acids and saline water.3.Good subsititute for rubber and metal hose in most application.