an Entity references as follows:
The China Railways "Dongfang Hong" diesel-hydraulic locomotive classes DFH2, DFH5, DFH6 and DFH7 built from the 1970s to 1990s were all used as shunters on the Chinese railway network. The use of diesel-hydraulic shunters has fallen out of favour on the Chinese rail network, with diesel-electric locomotives being used, however diesel-hydraulic machines continued to be produced for industrial railways - mainly the classes.