... an air-oil heat exchanger which is widely used in construction machinery,like:excavator, loader, road roller,scraper,paver, ... and low noise have been widely used in various areas,such as metallurgy, machinery,food, medicine,and chemistry ect. ... 25~18MaterialAl AlloyDimentionOn requestSpecialty Compact strcture,easy installation,lightweight Used for excavator oil cooling Export South America,Southeast ...