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In the month of November the highest increases in prices were observed in raw materials derived from petroleum derivates (8.4%), asphalt products (6.0%), lime, gypsum and plaster (3.0%), and glass (1.5%) among others. On the other hand, there has been a decrease in prices of the following raw materials: iron and steel (-3.8%), extracted arid substances (-0.4%), metal piping (-0.4%) and metal structures (-0.3%) among others.
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