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PRE RECORDED COMPACT DISK FOR KARAOKE PURPOSE (CD), BLANK RECORDABLE COMPACT DISC(CDR), READ-WRITE COMPACT DISK(CD-RW)VIDEO COMPACT DISC(VCD)DIGITAL VERSATILE DISC(DVD) AND SUPER VCD DISC(SUPER VCD); FIRE WARE, EMBEDDED-OS FOR CD/CD-R/CD-RWNCD/SUPERVCD/DVD PLAYERS; CD/CD-R/CD-RWNCD/SUPERVCD/DVD PLAYERS