Vineet Jain gave up a ₹1 crore salary in the US to launch RM Phosphates in India. His innovative fertilizer, Ziron, now helps over 3 lakh farmers increase yields and save ₹1,500 per acre. With an initial investment of ₹25 crore, the agri startup reached ₹425 crore in revenue for FY23 and is planning an IPO soon.