Relying on strong system design and system solution capability, based on power electronics technology, with electric drive converter products as the core, it has the drive system R&D capability in multiple industries (rail transit engineering vehicles, loaders, excavators and other construction machinery, off-road mining vehicles) under the scenario of diversified power (catenary power, diesel generator power, pure electric or hybrid power of power battery, etc.). With the help of the mature traction converter and electric drive technology in the field of rail transit, instead of the traditional drive mode, a high-quality and efficient electric drive system solution is provided for construction machinery.