... 15 years 3>Acid proof, waterproof, UV Resistant, Office stamp photosensitive ink Model NumberTST-HSYStyleWater-based Pigment InkApplication ... of StampSelf-inking Stamp,Office StampColorRed, Black,Blue,Green Purple,Characteristic :1. Outstanding ... Must not be mixed with About us:Suda Stamper Co.,Ltd. was established in 1998, and has been ...