... which color is white, and has past through the drinking water standards, and green environment, has the capacity of heat ... , outdoor is 20 years, indoor is 50 years 1. Anti-ultraviolet, oxygen barrier2. Green environment3. Flexible,durable4. Corrosion resistance5. Excellent ... be used at: 1. Civil building cold and hot water pipeline system2. Ground radiator heating pipeline system3. Factory air ...