apam powder suppliers Shandong Tongli Chemical Co., Ltd. was founded in 2007, under the Shandong Juxin Group, focused on oilfield chemicals 23 years. The company located in Huantai Industrial Park, Zibo, Shandong, China, is a leading global manufacturer of polyacrylamide PAM /SAP and total solutions provider,Newly found export and import company "Shandong Tongli Chem International Trade...