ATR-Asahi Glass Process System [P] Ltd. Manufactures Over Head Equipment or Glass Line Vessel. Asahi Glass Process System [P] Ltd. Is the supplier of plant machinery. Over Head Equipment or Glass Line Vessel can be easily fitted to Glass-Lined, SS or other metal / coated reaction vessels. Over Head Equipment or Glass Line Vessel is the reaction system which is specifically useful for production of highly refined and highly pure products such as fine chemicals, pesticides, vitamins and pharmaceuticals. The system is highly corrosion resistant. Because of modular construction, changes can be made in the overhead structure depending upon process requirements. The borosilicate glass of this equipment permits visual observation.