As the inventor and patentee of seamless table tennis, what contribution did Mr. Zhang Huilun make to the table tennis competition?

Better provide high-quality table tennis for friends from all walks of life and athletes from all over the world. ITTF has officially approved the seamless ball as an international competition ball, and now more than 20 well-known brands at home and abroad have cooperated to sell the new material seamless ball, which has won unanimous praise from ITTF and several national table tennis associations.