Two staff members from Harbin Electrical Machinery Co work on a production line manufacturing compensator rotors on July 24. The first batch of cutting-edge compensator rotors was recently produced by Harbin Electrical Machinery Co. Independently researched and developed by the company, the new type of compensator rotor has a much greater efficiency and can better satisfy the needs of a modern high-voltage power grid compared with traditional types. [Photo/MY399.COM]