DF4, DF4A, DF4B Class
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All three classes are very closely related 3250hp Co-Co diesel-electrics, often lumped together as DF4s It would not be an exaggeration to say that the DF4 dieselised China. Well over 4000 were built from 1969 to the mid 1990s. DF4s are becoming rare in main line service but some continue on industrial lines.
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