Twin International,one of the biggest manufacturer and exporter of water treatment chemicals and pharmaceutical intermediates such as:Aluminum Chlorohydrate(ACH), Amino acids, KBR,PBTC,TCCA,SMFP,ATMP,SAP,PAA,AA/AMPS,Plant extract oils(TTO),TDI 80/20,etc.Our company located in famous maritime Centre and financial Centre - Shanghai, China. Why Twin???. TOP 10 Chemical enterprises in China . Over 12 years of experience . Wholly owned production plant (48500 square meters). Sales to more than 76 countries . 10 main products with competitive prices. High quality products with perfect service