There was a backlog of about 72 ships near the Qingdao port on Monday, nearly double the number at the end of February, according to shipping data. The backlog of ships at the ports of Shanghai, Ningbo and Zhoushan is also building, with about 262 vessels now up from 243 a week ago. Salmon Aidan Lee, head of related divisions at energy consultancy Wood Mackenzie, said the increase in ship backlogs and delays could further push up freight rates.
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