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Among the prices of the most relevant raw materials consumed by the sector that have risen most in price over 2006 are: Electric energy (24.8%), Iron and steel (22.0%), Metal piping (17.3%) and Glass (12.8%). By contrast, there were reductions in annual prices (December 2006 on December 2005) of the raw materials for Oil by-products (-4.8%), Asphalt products (-2.8%) and Ceramic products (-0.1%).
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