Introduction：This product is made by injection molding of ABS raw materials, synthesized by ultrasonic technology, and has strong waterproof performance and drop resistance. RFID technology is used to encapsulate the RFID chip and inject epoxy resin to ensure the chip's robustness. The appearance is fashionable, the size is changeable, it is easy to carry, and it becomes a large entertainment place. The water park realizes the perfect product of one-card payment....