Chinese oil trader Unipec plans to resume U.S. crude shipments to China by March after the Xi-Trump deal at the G20 meeting reduced the risk of tariffs being imposed on these imports, three sources with knowledge of the matter said. The sources told Reuters that Unipec is looking to import U.S. oil by March 1, when the 90-day negotiating period agreed to by the leaders of the world’s two biggest economies comes to an end.