usa el DVD Identifier para averiguar quien fabrica los de 4x. Los de 8x tengo aki 27 y todos son:
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Unique Disc Identifier : [DVD-R:MCC 02RG20 ]
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Disc & Book Type : [DVD-R] - [DVD-R]
Manufacturer Name : [Mitsubishi Chemical Corp.]
Manufacturer ID : [MCC 02RG20 ]
Blank Disc Capacity : [2,298,496 Sectors = 4,489.3MB = 4.38GB (4.71GB)]
Recording Speeds : [1x , 2x , 4x]
[6x And Higher Might Not Always Be Detectable]
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http://DVD.Identifier.CDfreaks.com ]
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