Optical brightener OB Fine yog ib hom benzoxazole compound, nws tsis muaj ntxhiab, tsis yooj yim rau yaj hauv dej, soluble hauv paraffin, rog, ntxhia roj, siv quav ciab thiab cov organic solvents.Nws tuaj yeem siv rau cov khoom siv tshuaj dawb, PVC, PS, PE, PP, ABS, Acetate fiber, xim, txheej, luam ntawv number case, thiab lwm yam. emit ib tug kaj bluish dawb glaze.