KS-01 is a polymer of styrene and maleic anhydride. Because it is a compatibilizer obtained by polymerization, its maleic anhydride content is relatively high, and it can be used as a compatibilizer for AS, ABS and other materials. KS-01 is a copolymer of styrene and maleic anhydride (SMA). Because it is obtained by polymerization, its maleic anhydride content is relatively high compared to other SMA derivatives. As a result, KS-01 can be used as a compatibilizer for a variety of different materials, including acrylonitrile-styrene (AS) and acrylonitrile-butadiene-styrene (ABS) resins.