Changsha Pump Works Co., Ltd. is the largest pump manufacturer in China with more than 50 series products. The company has absolute advantage in the pump development in China especially the large ones, for example, 132 inches horizontal axial flow pump, 120 inches vertical diagonal flow pump, the largest dredger pump in China, 178 inches tubular pump, nuclear pump, etc. The manufacturing capacity ranges from welding, machining, heat treatment to test, with its pump test center relatively large in China. The thecasting capability is big enough to realize an annual output of 5,000 large pumps in various types.