Jiangsu Rainbow Heavy Industries Co., Ltd. 

Transformation of heavy floating crane engineering ship: To change the crawler crane on the original floating crane engineering ship platform to a fixed rotary crane to improve the safety and construction efficiency of the platform construction.
Cable laying ship: an offshore engineering ship used for laying submarine cables.
Riprap boat: accurate positioning, automatic riprap, mainly used for offshore wind power foundation single pile and submarine cable pile fixing, cable protection riprap and other operations.
3000t floating crane ship: it is mainly used for the installation, maintenance and fishing of 10-16mw deep-sea offshore wind power facilities (towers, blades, main engines, jackets, etc.), as well as the construction of cross sea highway and railway bridges and subsea tunnels.