GreenSignal Bio Pharma IPO – Should you Subscribe? Chennai based, the GreenSignal Bio Pharma IPO would open for subscription on 9th November, 2016. GreenSignal Bio Pharma Ltd is engaged in to vaccine manufacturing. Its revenues grown at 16% CAGR in last 5 years. It earned 25.9% profits in FY16. Should you invest in a GreenSignal […]