The project filled in the technical gap of domestically constructed MED with per-unit installed capacity 25000 tons/day. Shanghai Electric was responsible for the design, manufacture of the main equipment, installation and commissioning. The design and development team overcame the technical difficulties of heat exchange tube arrangements, horizontal-tube falling film heat transfer, vapor flow and stress analysis, mastered a number of independent core design technology about super-large MED cylinder evaporator. The success of the project marked that Shanghai electric is one step further on the way of domestically construction of low-temperature multi-effect distillation seawater desalination evaporator, and its design and manufacturing technology ranks among the world¡¯s most advanced level.