Shandong YiYi Chemicals head-office is located in the downtown of Weifang, Shandong province. Our producing plant is in South of Weifang. Contract warehousing is in nearby Qingdao Port. We produce PNS , AFS and Modified lignosulphonates (high end dispersants in dye and agri-chemical application) We import sodium lignosulphonate and kraft lignin from EU world class producer Sweden Domsjo We trade : Oil & Gas sector chemicals: TIBP, PAM, ATMP, AMPS, fibers, PAC, CMC, HEC, HPMC, PVA, PCE, SG etc. Construction and industrial chemicals: SG, PCE, calcium nitrate, calcium nitrite, citric acid, TIPA, DEIPA , PVC, Rongalite, formic acid, calcium formate, Titanium Dioxide etc. PVC Additives: Heat/Tin Stabilizer( 19%, 8.5%, 6.5% etc.), Impact Modifier, and DINCH series. Business activities span 30+ countries Very passionate and experienced team, very good attitude and service always.