India, Nov. 12 -- India's industrial production contracted by 4. 3% in September registering the weakest performance in seven years due to output decline in manufacturing mining and electricity sectors as per official data.According to the Central Statistics Office (CSO) data 4.3% contraction is the lowest in 2011-12 series of Index of Industrial Production which was unveiled in May 2017. The IIP had declined by 0.7% in April 2012.Factory output as measured in terms of Index of Industrial Production (IIP) had expanded 4.6% in September 2018.A slowdown was witnessed in the manufacturing sector which declined by 3.9% in September as compared to 4.8% growth a year ago.The power generation sector output dipped 2.6% in September compared to 8.2%...