The MP3 player is manufactured by making a Printed Circuit Board Assembly (PCBA) , attaching a loudspeaker and switch to the PCBA and then enclosing the PCBA and enclosing in an injection moulded plastic enclosure. STOP and START play control is operated by pressing the external switch. The user can change the mode of play from sequential to shuffle mode by operating a switch. The MP3 player is supplied in transport packaging,
Hejin group is a one-stop solution provider integrating the R & D, production and sales of MC PCB / FR4 PCB / FPC / SMT / Cable & wire harness, committed to become the most competitive and high-end PCB manufacturer in China.
It has five factories focus on different types of products to provide customer with all-round and high-quality products and services.