MS4328-250GPVP-40 (Polyvinylpyrrolidone, average MW 40,000)聚乙烯吡咯烷酮250g MS4329-100GPVP-360 (Polyvinylpyrrolidone, average MW 360,000)聚乙烯吡咯烷酮100g MS4338-100GPoly-vinylpolypyrrolidone (PVPP)交联聚乙烯基吡咯烷酮100g MS4339-100GPVP-15 (Polyvinylpyrrolidone K15)聚乙烯吡咯烷酮K15...