Air Leak Test Machine manufacturer / supplier in China, offering External Hydrostatic Pressure Testing Equipment for LPG (Liquefied Petroleum Gas) Steel Cylinders, External Hydrostatic Pressure Testing Equipment for CNG (Compressed Natural Gas) Steel Cylinders, External Hydrostatic Pressure Testing Equipment for Seamless Gas Cylinders (oxygen cylinders + other gas cylinders) and Welded Gas Cylinders and so on.