China's imports of coal in 2014 are expected to remain at the same level as last year, with demand growth slowing and the domestic market already well-supplied, a senior energy official said on Thursday. China imported 267 million tonnes of coal for the whole of 2013, up 14 percent on the year, with many buyers seeking out cheaper overseas supplies. Ren Lixin, director of the coal department at the National Energy Administration (NEA), told an industry conference that oversupply also remains a problem for a sector struggling with slowing demand and a campaign by the government to switch to less polluting energies. Oversupply was reflected in China's coal inventories…