1 billion yuan ($463 million), writes Xu Yihe.

Company officials said the IPO plan is still pending China Securities Regulatory Commission approval.

Once listed, EnerTech will be the third China National Offshore Oil Corporation services division to have gone public after China Oilfield Service Ltd (COSL) and Offshore Oil Engineering Company (COOEC).

EnerTech is China’s largest operator and owner of floating production, storage and offloading vessels, with four serving at Bohai Bay in northern China and another four in the South China Sea.

It