Qingzhou Guanghui Chemical Factory in Shandong Province was established in 1998, specializing in the production of industrial-grade sodium tripolyphosphate, disodium hydrogen phosphate, sodium pentaphosphate, sodium dihydrogen phosphate, potassium dihydrogen phosphate, potassium hydrogen phosphate, sodium hexametaphosphate, and sodium acetate. It is a designated manufacturer of phosphorus chemicals and phosphates series in Shandong Province, offering a one-stop service of production, supply, and sales.