This department of hydropower station of serial trailers digests, absorb foreign advanced technology , design the new-type products developed by oneself , famous-brand diesel engine and our company is it have to is it brush or is it brush generator link with elasticity of the axle to have to have world level to develop by foreign countries. The control device lies above the generator . The products are suitable for the field work , urban project , outlying to lack electricity area,, person who move many army ,etc. department make light , power daily reserve power of Engineer of communication.