American Chemical Technology Corporation's Zhejiang office -- Hangzhou Lanhong Chemical Co., Ltd. (formerly Zhejiang Wuwangnong Biotechnology Co., Ltd. Biotechnology Co., Ltd.) and its Jiangsu office Changzhou Chuanlin Chemical Co., Ltd., are the authorized manufacturers of American Chemical Technology Corporation in China, as well as China’s potassium pyrophosphate industry standard Hg / T 3591-2009, and China’s copper pyrophosphate industry standard Hg / T 3592-2009. The company has become one of the representatives of high-end potassium pyrophosphate and copper pyrophosphate in China by in-depth research and continuous transcendence of the above-mentioned products and other polymerized and complex phosphate products.