They are based in Hong Kong. Both the early Spurt motors and the new Plutonium motors are designed and built by the owner of Team Powers. You will not see anyone else with this design. The motors are designed to work with their unique cooling system that exhausts the heat out of the motor instead of blowing cool are on the motor. Their ESC is also designed by Team Powers however, the assembly is contracted out. Andy, the owner of Team Powers is an electrical engineer and does all of the design work himself on both the motors and ESC’s. The batteries are made by one of the three large lipo manufactures in China just like every other lipo on the market.