Palladium alloy this application, silver, about 20-30%, other ingredients (such as gold, etc.), the content of <5%. Rate and temperature of the hydrogen-permeable palladium alloy, the thickness of the membrane and the permeate touch both sides of the raw material hydrogen and the purity of the differential pressure (P). Elevated temperature, increasing the P and reduce the thickness of the film, causes the hydrogen permeation rate increases. However, elevated temperatures, will reduce the tensile strength of the permeable membrane. Therefore, the use of palladium tube temperature is usually controlled at about 450 ℃. Certain impurities can lead to the palladium poisoning, so that the air permeability performance deterioration, a film can even destruction. The palladium can cause poisoning substances: mercury, arsenic halides, oil vapor, sulfur and ammonia-containing substances as well as dust and other. Palladium alloy can be made into a tubular shape (referred to as a the palladium tube) or diaphragm (called palladium membrane). ABS alloy pipe and special cold melt is one widely used in building water supply and central air conditioning, especially in building water supply riser tube and central air conditioning applications. PC / ABS alloys can also be produced automotive exterior parts such as automotive wheel covers mirror cover, tail lamp. PC / ABS has good formability, machinability large automotive parts such as car fenders.