A leading pharmaceutical enterprise in East China Biomedical Park focuses on sterile preparation and biological reagent production. Its production process requires extremely high-standard purified water that strictly complies with GMP and Chinese Pharmacopoeia standards. The original water treatment system suffered from unstable water quality, excessive microorganisms, complicated operation and manual maintenance difficulties, which could no longer meet the enterprise’s mass production and quality traceability requirements. After comprehensive comparison of technical strength, qualification certification and after-sales service,