- 3n composite is one of the best Polyetheramine D-230 Manufacturer in India. We offer a wide range of polyetheramine products in liquid and in powder form. We offers many varieties of polyetheramine series chemical in India. It consist of low viscosity, low Chroma, and low vapour pressure. It is most significantly useful as an epoxy curing agent https://3ncomposites.com/polyetheramine-d-series/