YanJigang,senior welder pipe,engaged in ship repairmore than 20 years, good at ship pipe system transformation welding operations. HasDirected Service in the Tianjin Waterway Bureau for dredgers escort escort, skilled inspecial engineering ship equipment maintenance. He has been engaged in ballastwater system modification works in shipyards in Xixiakou and east China, Rockylsland, South China Sea.
Weihai Changtai Shipbuilding Company 
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