... 5 sets bonding machines, 3 sets SMT machines, 7 production lines, 3 welding machines and other related ... :1, familiar with MCU, ARM system development process 2, profound knowledge of EMS, which helps to design ... CDMA/GPS and short distance wireless communication(2.4g, 433/315mhz)7, familiar with RS485/232,DMX512,CANBUS ... screen system product design, with WIFI, Internet, home network product design