Hi, A bit formally, Plastic Engineering is about processing, designing, developing, and manufacturing plastic products. You can enroll themselves for ME or M.Tech degree in Plastic Engineering or related course. Some of the top recruiters are: Ministry of Petroleum,Natural Gas, Oil and Natural Gas Commission (ONGC) Oil India Laboratories, Petrochemicals Engineering Plants, Indian Institute of Petroleum, Polymers Corporations and more. Coming to scope, there are ample engineering courses which teach plastic technology or a broader branch, Polymers. So do not worry about the scope. It is vast. Go for it.