However, even within the warranty period, the following cases will be subject to paid service:
If consumable parts such as carbon brushes, bearings, seals, cords, plugs, chucks, and batteries have worn out naturally;
If accessories are damaged;
If the malfunction is caused by user negligence or environmental factors (e.g., dropping, external impact, incorrect voltage, natural disasters, oil infiltration, water exposure, breakage, or excessive operation);
If the product has been disassembled, repaired, or modified in shape or structure by an unauthorized service centre;
