Shenzhen AL CO.LTD.located in shenzhen guangdong province china. It is a professional manufacturer of telecommunication equipment.We have specialized technical advice and after-sales service department,and pursue reputation  first and service-orientated.
Through the GSM/GPRS/CDMA transceiver module can be SMS,voice calls,mobile repeater monitoring,wireless data transmission,wireless remote monitoring,GPRS cdma2000 1x wireless Internet access and GPS satellite positioning.
Welcome to inquiry.