DVD-R (or called DVD-Write-Once) is a time limited recorded DVD, uses similar to CD-R. Because data is written can not be modified after, they are also called write-once-only DVD. DVD-R is higher than CD-R in recording capacity (about 6 times CD-R’s capacity). Now the second generation of single-sided DVD-R disc capacity has reached 4.7GB, DVD products which will lead to more broad prospects for development.