... life 3,operate:easy to use 4,Suit PVC,ABS,PP,PS,etc 5,Stable ... , high strength, steel is good, pressure deformation of small, long life, high-strength face plate, pressure capability ... hydraulic system uses its own design and manufacture of integrated valve blocks, automatic compensation function, automatic ... be divided into two district heating, heat a small sheet metal, just with 1 / 2 heating ...