Shell and tube heat exchange are using pure titanium tubing, aci d and alkali resistance, corrosion resistance. Corrosion in seawater essentially zero, the surface is not easy to produce the oxide layer, and do not pollute the media. The shell is made of PVC plastic pipe welded, has a very good leak-proof, Structure and principle. This product is mainly made of titanium / titanium threaded pipe and PVC plastic shell, which is including two major components, iide and outside. Its working principle is titanium tube refrigerant and the liquid iide the plastic case between each other on an equal energy trafer. This product is simple to produce, easy to use, and is widely used in swimming pool heat pump, the sauna water circulation system, fish pond, Mari culture, anodizing, electroplating, pharmaceutical and petrochemical industries.