China's self-built semi-submersible oil and gas production platform is ready to leave its construction site in east China's Shandong Province and head to the Lingshui 17-2 gas field in the South China Sea – the biggest gas field in China. The platform is the world's first semi-submersible oil and gas production platform and weighs over 100,000 tonnes. Join CGTN's reporter Cao Bing for more.
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