With annual sales exceeding $13 billion in fiscal year 2013, Parker Hannifin is the world's leading diversified manufacturer of motion and control technologies and systems, providing precision-engineered solutions for a wide variety of mobile, industrial and aerospace markets. The company employs approximately 58,000 people in 49 countries around the world. Parker’s engineering expertise and broad range of core technologies uniquely positions the company to solve some of the world’s greatest engineering challenges. By partnering with customers, Parker improves their productivity and profitability and seeks new ways to solve humanity's biggest challenges.

Founded in 2001, Ningbo Shuangda Hydraulic Machinery Co., Ltd. is a high-tech enterprise which is specialized in producing all kinds hydraulic units and hydraulic systems. With a coverage area of 12000㎡, Now we have more than 40 sets of kinds of metal machining equipment, such as machining centers, CNC machining equipment, high-precision cylindrical grinders, vertical honing machines and so on. Besides, we have more than 10 sets of testing and metering equipment, such as regular Valve test bench, proportional Valve test bench, special Valve test bench, pneumatic measuring instruments and so on. For more than 10 years’ development, now Ningbo Shuangda Hydraulic Machinery Co., Ltd has had more than 25 million RMB real asset and gained a strong ability on R&D and mass production of all kinds...