Dear purchaserWe ,Gansu Jinbei Chemicals Co.,Ltd, is professional in chemicals in this for several years, with the strength of Caustic Soda, Zinc Oxide, Titanium Dioxide , Lithopone,STPP,etc. Our products are excellent in quality and reasonable in price.Any comments, that will be appreciated! Thanks.Best regardsGraceCompany:Gansu Jinbei Chemicals Co., Ltd .grace(at)jinbei-chem dot com