Tianjin wankai transmission technology development center, is a scientific research and production of electric actuator based on the modern enterprise concept to set up research and development, production and sales as one of the enterprise Center started in the eighties of the last century, a total of 218 employees, including 18 senior engineers, intermediate 18 engineers technicians 24, engineering and technical personnel accounted for more than 26% of the total number of employees, with strong technical strength center always stand in the preamble of the electric actuator technology development. In the production of DKJ, DKZ, new to the executive body at the same time in 1993 with the introduction of internationally renowned French Bernard actuator products. After several years of digestion, finally understand the independent R & D and production of the imported Bernard SD/ST series electric executive mechanism, selling more than 20 domestic provinces and autonomous regions.