3, strict product design procedure which ensures its progress . 4, many years experience in pcb design, copy and change. ... of GSM/GPRS/CDMA/GPS and short distance wireless communication(2.4g, 433/315mhz)7, familiar with RS485/232,DMX512,CANBUS ... platform and android application software OEM OEM ODM service offer, touch screen system product design, with WIFI, Internet, home network product design