Hangzhou shenshi heat exchanger Co.Ltd is a patented manufacturer of coaxial heat exchanger in China.We have intellectual property rights.The multi-spiral twisted tube and new tooling patent have been approved by the China official. Shenshi coaxial heat exchanger tube could be made from copper ,cupronickel,aluminium bronze,stainless steel ,titanium and so on. Shenshi coaxial heat exchanger is widely applied on water chiller , air source heat pump,water source heat pump,geothermal heat pump,marine heat pump,pool or spa heat pump ,laser chiller ,oil cooler and other air-conditioner and refrigeration machines such as medical process equipment ,food processing machine ,chemical processing equipm...