... America Woodward, WITCO, Australia AEC companies, developed and produced 4100, 4105, 6105, 6135, D226B, 6160,6170, WT615, WT618, CW200 series gas ... America Woodward, WITCO, Australia AEC companies, developed and produced 4100, 4105, 6105, 6135, D226B, 6160,6170, WT615, WT618, CW200 series gas ...