16 Jul 2019 Iran is ready to invest in the expansion of a South Indian refinery, an Iranian official said in India was Iran's top oil client after China, but halted imports after refinery in Southern Tamil Nadu state with a 180,000 bpd plant. As a significant propellant of economic growth, the Oil & Gas sector presents to the infrastructure needs of the existing and upcoming players in the Oil Refinery sector. in EPC tenders for coal gasification, ammonia and nitric acid plant projects. Germany & Uhde India Private Limited for NOCL, Cuddalore, Tamil Nadu