Kingflex acoustic insulation sheet is open cell elastomeric foam,based on synthetic rubber (NBR). It is a vinyl sound barrier mat loaded with naturally occurring minerals. This Sound Insulating Sheet is free of lead, unrefined aromatic oils and bitumen. It is excellent at reducing the transmission of airborne sound and in enhancing the insertion loss performance of pipe insulation by providing a barrier to noise.Kingflex coustic Insulation For HVAC Ducts,Air Handling Systems,Plant Rooms And Architectural acousticsKingflex has 5 large automatic assembly lines, with an annual production capacity of more than 600,000 cubic meters.We attend many trade exhibitions worldwide to meet our customers face-to-face，These exhibitions give us the opportunity to expand our business every year. We welcome all customers worldwide to visit us in China.Kingflex is an energy-saving and environmental friendly comprehensive enterprise synergizing R&D, production and sales. Our products are certified with British standard. American standard, and European standard. The following are part of our certificates