Falling industrial demand and mild weather have turned China's energy giants into sellers of LNG in Asia. : LONDON/SINGAPORE, March 9 (Reuters) - Falling industrial demand and mild weather have turned China's energy giants into sellers of liquefied natural gas (LNG) in Asia for the first time since last year's massive import spree. Chinese players were on the receiving end of last year's doubling of LNG prices, largely driven by their rapid shift to gas to combat coal smog as well as elevated regional demand for the fuel.