� Wuhan JOHO Technology Co., Ltd JOHO tasks cover the design, manufacture, test and new product research of power-source for space and new energy field. Its products include power-sources subsystem of space vehicles and solar cell, storage battery, power control unit and ground photovoltaic power generation system, energy storage system, power Li-ion batteries of new energy field. JOHO is devoting to the research of electrical power-sources, in which personnel processes technical background of design, manufacture, test for products of space electrical power-sources and new energy. JOHO is the leader in field of electrical power-sources innovation in China. Li-ion batteries�triple junction GaAs solar cells and Low-orbit high-voltage 100V bus power conditioner were successfully applied in space vehicles for the first time in China. The successful application of above-mentioned advanced technology of electrical power-sources subsystem in orbit set a milestone in the history of space vehicles in China. At present, JOHO is the leader of domestic market share, which owns annual capacity of parallel manufacturing for dozens of satellite power subsystems. It has provided good quality power-sources products and subsystem solutions of space vehicles and ground applications for several counties