About opticalwhitener

China opticalwhitener(taojiayue chemical) is expertise in optical brightener for over a decade. Our optical brighteners are equivalents to BASF, Clariant, same purity, and same cas number, but more economic.  We ONLY do pure powder, no reduction, no filler inside.


  1. We offer national test standard and method(GB) for our products.
  2. We provide detailed company check report(in which you will learn how to check Chinese companies).
  3. We offer company check service for our customers.

Optical Brightener Price News

Optical brightener ob, ob-1 price just increased. update date 18th March 2022.