亚洲欧美久久久久,日韩国产在线观看,狠狠草视频,97久久久国产精品,av老司机宅男电影院,国产精品任我爽爆在线播放,小h片免费观看久久久久

Your Current Position:  PRODUCTS > Gum Rosin series > Light-Colored Rosin

Light-Colored Rosin

Light colored rosin is made by refining Rosin under certain temperature and vacuum conditions; It is used in electronic flux, light rosin resin and edible ester gum.