The purchase had yet to wait for approval by relevant regulatory bodies before coming into force, CSR said.
Headquartered in Newcastle, SMD is a designer and manufacturer of subsea remotely operated vehicles (ROVs) and provider of marine engineering service.
Based in Zhuzhou in central China's Hunan Province, CRS ZTE is a listed performing arm of the CSR Zhuzhou Institute, which has a department dedicated to wind turbine designing and manufacturing.
Latest statistics released by China Wind Energy Association showed CSR Zhuzhou installed 610MW of wind turbines in 2014, representing a 2.61% share in the domestic market and ranking the 13th on the list of Chinese manufacturers.
China has developed a manned submersible that can dive as deep as 7,000 some metres under the sea. But the country is relatively inexperienced in subsea engineering.