1.Nws yog siv rau hauv kev tsim cov alkaloids, dyes, xim, catalysts, nplaim retardants thiab tsis muaj kuab paug hom hlau inhibitors ntawm cov dej txias system.
2.Nws kuj tseem siv tau rau galvanized polishing tus neeg saib xyuas thiab tshuaj reagents.