Supplier: Optical brighteners for use in the procedure of making textiles, detergents, plastic and paper, such as ci71, ci85, ci121, ci135, ci185, ci199, ci220, ci393, including cxt, dms, ba,dcb, pf, pf 3, dt, ob, ebf, er 1, er 2, er 3, bbu, cbs x, kcb, ksn, fp 127, ob 1
