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physical chemical process for obtaining preparations of dyes capable of producing optical colors inframacromolecolari complex homogeneous and stable in conditions of stability and repeat croboth the dye and the color material on lenses or optical total is built with organic materials
physical chemical process for obtaining preparations of dyes capable of producing optical colors inframacromolecolari complex homogeneous and stable in conditions of stability and repeat croboth the dye and the color material on lenses or optical total is built with organic materials