Indian markets have to face a double whammy at the start of the week as India’s industrial output contracted 0.1 per cent in March, recording a 21-month low, due to slowdown in manufacturing sector and the world’s two biggest economies seemed at the end of the road over trade negotiations on Sunday as Washington demanded promises of concrete changes in Chinese law and Beijing said it would not swallow any ‘bitter fruit’ that harmed its interests. At the time of writing, the SGX Nifty was trading lower by 40 points at 11,244.