A: do not recommend mixed. The most typical is the steel radiator and copper aluminum radiator can not be installed in the same loop, will form a potential difference, and other raw materials (copper, aluminum) radiator in a loop, due to the occurrence of electrochemical effects , The formation of corrosion. The ions in the raw material react with the ions in the water, and will be gradually corroded, decomposed into ionic state and eventually decomposed completely, resulting in irretrievable results, resulting in leakage of radiator.