Android Code Snippet Print chinese word in BT Printer

i m use SP-RMT10BT bluetooth printer 50mm
if print chinese string

Dim o_Serial As Serial
Dim o_Printer As TextWriter
o_Printer.Initialize2(o_Serial.OutputStream,"GB18030")
PrintBuffer = "打印中文"
o_Printer.WriteLine(PrintBuffer)
o_Printer.Flush