Shanghai Unithank Marine Co., Ltd. Shanghai Unithank Marine Co., Ltd.?shortly called Unithank??established in 2008?is a company agenting advanced spare parts for dynamic equipment and transmission equipment of foreign brands and a company focusing on sales supports and services internationally.Our company lies along Caoan road whose traffic is very convenient. Our company mainly agent diesel engine parts of Japanese YANMAR, Swedish DAROS rings,Coltrco ultrosonic detecting devices etc and that are mainly used for engineering machinery vessels oil field mining etc. and have a wide impact on these field.