Urea yog cov chiv qoob loo uas feem ntau yuav tsum tau siv. Nws lub luag haujlwm tseem ceeb yog kom tsis txhob muaj cov tshuaj phem hauv cov av, thiab daim ntawv thov mus sij hawm ntev tsis muaj kev phom sij. Hauv kev lag luam, kua ammonia thiab carbon dioxide tau siv los ua raw cov ntaub ntawv los ua ke ncaj qha sib xyaw urea hauv qab lub siab ...
1. Feem ntau siv los ua textile mordant, ua liaj ua teb tshuaj tua kab, dej tua kab, tiv thaiv kab mob, thiab tseem siv rau tawv tawv, tooj liab electroplating, hnav khaub ncaws, thiab lwm yam 2. Siv: Siv ua tshuaj tua kab mob thiab tiv thaiv kab mob, thiab tseem yog tshuaj tua kab ua liaj ua teb. 3. Siv raws li kev tshuaj xyuas reagen ...