Pomax Company partnered with a major Chinese factory with over 30 years of experience in racket string production. Pomax is proud to collaborate on research, resulting in high-quality strings named Ultra 63 and Pro 66. All models are guaranteed to use 100% Japanese materials and advanced technology machines to produce the Pomax Elephant Line series. This ensures Pomax strings are of high quality and affordable for badminton enthusiasts. Special thanks to the Pomax research team and engineers for their dedication.