#china-technology
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China, the use of this black technology a lot: less than 100,000 tons of ships easily pulled away - 中国这项黑科技用处多多：10万吨以内大船轻松拉走
In all ship types, the semi-submersible boat is a very important technology. China has a large demand for semi-submersible vessels, so China has a wealth of technical accumulation in the development of
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