China XD Group Corporation, directly supervised by SASAC, is a manufacture    and technology research enterprise specializing in complete sets of power transmission and distribution equipment. Established in July of 1959, XD Group was based on 5 of the 156 National Key Industrial Projects in the first Five-Year-Plan Period and   develops into a conglomerate with scientific research institutions and backbone enterprises as the core. In half a century's development, XD Group has established the    largest and most influential complete-set equipment research ...