LONDON, Jan 19 (Reuters) - China"s magnesium exports nearly doubled in November from the same month a year earlier as production ramped up alongside the lifting of restrictions on power use by energy-intensive industries, easing fears of shortages in Europe. read more China supplies around 85% of the world"s magnesium - a key element in aluminium alloys used to make auto parts. The country exported 36,160 tonnes of high-purity unwrought magnesium in November, Chinese customs data showed, compared with 24,329 tonnes in October and 18,829 tonnes in November 2020. Magnesium prices have fallen back to around $8,800 per tonne having hit all-time highs of $16,250 per tonne in October. read more