Damas Team Visit to Duroflex Manufacturing plant. Duroflex India is the largest exporter of sleep and comfort products. What began as a small manufacturing plant along the quiet canal at Alleppey, Kerala, is today a leading enterprise with the most modern manufacturing processes in Kerala, Tamil Nadu, Telangana State, and Maharashtra. Duroflex Mattresses become India's first designer mattress through collaboration with world renowned Foley Designs. The signature aesthetics become unique to brand Duroflex