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Among raw material prices that rose most in March 2003 were: Asphalt products (5.4%), Plastic piping (3.8%) and Lime, gypsum and plaster (1.7%). On the other hand, average monthly prices fell for raw materials of Metal Piping (-1.2%), Paint and varnish (-0.9%), Oil by products (-0.9%) and Glass (-0.7%), amongst others.
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