Hangzhou Water Treatment Technology Development Center Co., Ltd (HWTT for short hereafter) was founded in 1967; as a pioneer of domestic liquid separation membrane field and an important industrialized base of seawater desalination and water treatment technology. HWTT is the initiator in membrane separation applied to seawater desalination, preparation of industrial pure water, electronic ultra-pure water, food drinking water, medical use water, as well as wastewater re-use, concentration and separation etc. And it also owns full membrane separation products, such as reverse osmosis, nanofiltration, ultrafiltration, microfiltration electrodialysis, and EDI. Applying 50 years' successful application experience, HWTT provides the customers with the ways for design consultation, general project contract, research and development, product production, engineering packaged, after-sale service, specialized training of water treatment by membrane process.