Cummins, the largest foreign engine investor in China with over US$140 million invested, owns Chongqing Cummins (M, N, K series) and Dongfeng Cummins (B, C, L series). Their engines meet global quality standards, are backed by an international service network, and comply with ISO 3046, ISO 4001, ISO 8525, IEC 34-1, GB1105, GB/T 2820, CSH 22-2, VDE 0530 and YD/T502-2000 requirements for telecom diesel generator sets.