khoom

  • Uv fluorescent pigment for anti-falsification printing

    Uv fluorescent xim rau cov ntawv cuav los tiv thaiv

    UV fluorescent xim nws tus kheejyog xim tsis muaj xim, thiab tom qab nqus lub zog ntawm lub teeb ci ci ultraviolet (uv-365nm lossis uv-254nm), nws tawm sai sai lub zog thiab ua kom pom tseeb xim xim fluorescent nyhuv. Thaum qhov chaw taws teeb tawm, nws nres tam sim ntawd thiab rov qab mus rau lub xeev qub pom.