Maintenance Guide: It is recommended to regularly use a vernier caliper to measure the thickness of the frame to ensure that normal wear and tear is controlled within 0.2mm per year. If any abnormal noise is found, please immediately send the racket to a professional institution for testing. Please remember that rackets, like athletes, have their own specific 'lifespan'. Once significant deformation or changes in hitting feedback occur, updates and replacements should be considered to ensure the safety and effectiveness of training and competition.
