... STK, USSD gprs handheld pos :Key Words: airtime virtual top-up, gprs payment POS terminal, wireless handheld POS with GPRS ... portable POS, point of sale system, over-the-air top-up, Wireless Restaurant/hotel GPRS/GSM Printer, GPRS SMS ... Specifications6. Company OverviewFounded in 1999, Guangdong Telepower Communication Technology Co., Ltd is a high-tech company which researches, develops and ...