How long does it take to replenish materials after ESC?

Within 3 months. The Immigration Bureau requires supplementary materials after the electric adjustment. If there are other problems with the speed regulator's motivation or speed adjustment funds, a second telephone investigation may be required, which usually takes within 3 months. The full name of ESC is electronic speed regulator. Depending on the motor, it can be divided into brush ESC and brushless ESC. It regulates the speed of the motor according to the control signal.