DU800

• Date Code:DJL ( DU800 )

DU900

• Date Code: DJL ( DU900)
• Date Code: JJK ( DU900 )
• Date Code: FJK
• Date Code: LJJ

DU1000

• Date Code: JJK ( DU1000 )
• Date Code: AJK ( DU1000 )

DU2000

• Date Code: GJJ ( DU2000)

DU950S

• Date Code: DJK ( DU950S )