(Reuters) - China's central bank and customs authority said on Tuesday they would simplify procedures for companies exporting gold, following a slump in domestic demand for the metal. The economic fallout from the coronavirus pandemic led dealers to sell gold in China, the world's largest bullion consumer, at massive discounts versus the international spot prices. Companies applying to export gold no longer need to submit physical gold inventory certificates approved by the State Council, China's cabinet, or gold production capacity certificates, the central bank said.