Rex Electric Chemical Products Department belongs to Shanghai Precision Scientific Instrument Co., Ltd (the former body is Shanghai REX Instrument Factory), which is located at Shanghai Anting Automobile City and specializes in R&D, manufacture, sale and service of electric chemical water quality analysis instrument. Shanghai Precision Scientific Instrument Co., Ltd is the wholly-owned subsidiary of Shanghai Feile Co., Ltd. And one of the famous scientific instrument manufacturers with main products: Analyze instrument, balance instrument, electric chemical instrument, physical optical instrument and integrated environmental monitoring system. It is the first group of Shanghai High Tech Enterprise and Top 100 Enterprises of Electronics and Information Department. And it is awarded as Shanghai Enterprise Technology Center with hundreds of independent intellectual property rights, invents and, patents, which fill the blank in China with many awards.