Founded in 1953, has been manufacturing heat exchanger for more than 30 years since 1970s and now becomes one of the best heat exchanger manufacturers in China. We specialize in manufacturing high-efficient and energy-saving heat exchanger and R&D of special heat exchangers. Based on different structure and medium, our products are classified as finned tube heat exchanger(including air cooler, hydrogen cooler etc. ), shell&tube heat exchanger(including oil cooler, freshwater cooler, heater and condenser etc. ), plate& fin heat exchanger, plate heat exchanger and interstage cooler, almost covering overall types of heat changer currently. Our products are widely used in many industries, such as petrochemical, naval ships, electric power, marine, compressor, locomotive, diesel engine, metallurgy&mine, textile machinery, medical apparatus and instruments and automobile, etc..

We have all kinds of labs, such as heat exchanger combination property lab, material physical property lab, chemical analysis lab, measuring & testing lab, NDT lab and welding test lab, etc.. We have got 11 patents(including 2 patents of invention, 5 new practical patents and 4 patents of appearance) and 13 technology-advance awards, and have been participated in constituting 5 national and industrial standards of heat exchanger(2 national standards and 3 industrial standards).

Defon carries out quality control since 1984, and passed kinds of certifications of quality control systems in recent years, such as ISO90001, ISO14001, TS16949, GJB9001; and has got CCS Works Approval, BV Works Approval; has got the manufacturing qualification for Grade D1, D2 Pressure Vessel and the designing and producing qualification for ASME "U", "R" product, and is able to produce PED products for Europe Union countries; Defon is the postdoctoral industry base of Hubei province; obtained the title of national "Major High & New-Tech Corporation" in 2005; the "fuel oil & lube oil control module for large-scale dynamic system" was specified in the list of National Torch-Plan Major Projects in 2005; entitled as the "Major High &New-Tech Corporation in Hubei Province" twice; "DCF" brand heat exchanger is entitled as the "Hubei Top Brand " in 2003 and 2006. Defon's high-efficient and energy-saving heat exchanger was entitled as "China Top Brand" in 2007. Product from Defon is supervised and inspected by provincial and civic Inspection Institutes for Special Equipment, Representative of Navy and CCS, GL, LR, ABS, BV, NK, DNV etc. For long term, which guarantee the stable and credible quality. Waste heat and residual heat adsorption cooling system produced by Defon got the certificate of National Major New Product.