We are specialists in R&D, design and manufacture of high efficient heat exchangers. DEFON is a strategic partner of Sinopec, China Military industry, Railway ministry, China Shipping Company. China Power Companies etc. Our main products are classified as shell and tube type, finned type, tube and strip type, plate fin type, plate type, fuel oil and lube oil separator, adjusting and supplying system, oil system modules. We have 230 engineers and technicians. Our heat exchangers have obtained one national science honor, 11 ministry achievement honors, 17 municipal achievements and 13 national patents. Our high efficiency products were honored as "China Top Brand" in 2007.We pay much attention to machines and tools investment and have more than 400 units of machines, 50 units of them are specially for pressure vessel manufacturing, and we also have several high automatic production lines. Our products can meet the requirements of different fluids, such as normal condition, high temperature, high pressure, corrosive gas and fluid mass and are widely applied in petrochemical, metallurgy, marine, diesel engine, locomotive, power generation, compressor, process engineering industries.