as a professional power tools manufacturer established in 1979,we, hongyu power tools co., ltd manufacture a variety of high quality electric drills, rotary hammers, circular saws, angle grinders, sanders, planers, and polishers, marble cut-off machines, electric routers. and also, we manufacture the spare parts such as armatures, coils, gear sets which can be applied to the makita, bosch, and hitachi power tools.