郑昌明

Tower crane, rod piece assembled type standard knot and rod piece used for assembled type standard knot

钱建军, 谭书虎, 郑昌明, 2009 .

Drag link mounting device and drag link mounting method applied to tower crane

肖雪松, 郑昌明, 2013 .

Tower crane, derrick mast device and hoisting method thereof

蒋孝德, 周海建, 郑昌明, 2011 .