rosinn.松香;树脂
rosin maleic adduct顺丁烯二酸酐松香加成物
rosin oil adultment松香油的石油代用品
Rosing mirror wheel玫瑰色镜面车轮
rosin-core solder松脂心焊料
rosinated type toner松香酸盐型色料
rosin-cored solder松香心焊锡条
rosin oil adulterant松香油的代用品
rosin-maleic ester顺丁烯二酸-松香脂
rosin glycerin ester甘油松香,酯胶