修改 SYM MOTORCYCLES JOYMAX

示范	生產日期	動力方面，KWT	動力HP	卷立方厘米	建築類型
SYM MOTO JOYMAX Joymax 300i	01.2012 - ...	21	29	278	Motorcycle
SYM MOTO JOYMAX Joymax 300i Evo	01.2009 - 12.2010	17	23	263	Motorcycle
SYM MOTO JOYMAX Joymax 250	01.2005 - 12.2007	15	21	251	Motorcycle
SYM MOTO JOYMAX Joymax 250 E3	01.2006 - ...	15	21	251	Motorcycle
SYM MOTO JOYMAX Joymax 250 GTS	01.2006 - 12.2007	16	22	251	Motorcycle