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Rosin resin SOR 424 is a light-colored and stable modified resin, which is based on rosin and unsaturated polyacid as the basic raw materials. Rosin ir maleic anhidridas, skirtas pridėti pentaeritritolio reakciją ir esterinimą, sukurtas rafinuodami, dekolorizaciją, modifikaciją ir kitus procesus. The varnish produced by it has the advantages of high brightness, high hardness and strong adhesion.