We are a stationery factory, one of the most important suppliers in Hangzhou of China. Trading in fluorescent ink and invisible ink series for 6 years.Our motto is "keep innovating, keep leading" For recent years, our products, particularly the invisible ink series, have a good market share in stationery field. Now, our research and develop department promoted our invisible ink again with diligent and hard work. So our new invisible ink called HZS is of better quality than before.The outstan...View More