Hubei DEFON Heat Exchanger Co Ltd (former name Hubei DENGFENG Heat Exchanger Co Ltd) is located at Daye city 70km from Wuhan The mission of DEFON is the energy saving and emission reduction 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