Qingzhou Guanghui Chemical Factory in Shandong Province was established in 1998, specializing in the production of industrial-grade sodium tripolyphosphate, sodium pentaphosphate, disodium hydrogen phosphate, sodium dihydrogen phosphate, potassium dihydrogen phosphate, potassium hydrogen phosphate, sodium hexametaphosphate, and sodium acetate. It is a designated manufacturer for the phosphorus chemical industry and the series of phosphates in Shandong Province, providing a full-service chain from production to supply and sales.