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Rosin Resin SOR Fa'asologa - SOR 422
Rosin resin SOR 422 o se maleic acid resin, e lauiloa foi o maleic acid resin dehydrated. Ose ma'a'a tele saunia e ala ile tali ole rosin ma maleic acid ua suia ile fa'aopopoina ole rosin ile maleic acid anhydride ma esterification ile glycerol po'o le pentaerythritol.
