CUMMINS series adopt CUMMINS engines. As the largest foreign engine investors of China, Cummins possess Chongqing Cummins Engine Co., Ltd ( produce M, N, K series engine) and Dongfeng Cummins Engine Co., Ltd (produce B,C, L series engine ) and produce CUMMINS engines with globally uniform quality standard. N series&K series 4-cycle water-cooled diesel engine use in industry produced by Chongqing Cummins Engine Co., Ltd and 4BT series&6BT series&6CT series 4-cycle water-cooled diesel engine use in industry produced by Dongfeng Cummins Engine Co., Ltd, compact structure, large power, rebiable capability, 24VDC working voltage for control system , abopt circumvolve fuel filter&oil filter element, dry air cleaner, electronic speed regulation control system.