手持设备SDID卡的功能控件编写，用此控件读取RFID编号-Handheld devices SDID card controls the function of the preparation, use this control to read RFID code

手持设备SDID卡的功能控件件编写，用此控件读取RFID编号 -Handheld the equipment SDID card function control to write, read RFID numbers with this control