DSM Composite Resins, the European market leader in unsaturated polyesters (UPE), announced a 3 - 5% price increase on its entire product range globally with effect from 15 May 2009, or at the earliest time possible, depending on existing individual contracts. The price hike is a result of feedstock developments of Styrene amongst other raw materials, the company indicated. DSM Composite Resins develops high quality UPE resins like Vinyl esters that are used for the production of fiber-reinforced plastics or non-reinforced filled products in end-use applications such as marine, tanks & pipes, cure in place pipe, automotive and wind turbine blades.