"Duplication" describes the process of bit-for-bit copying of DVD - the cloning of a master disc. It's the preferable method of DVD production for shorter runs or for those times when you need a very fast turnaround.
Rather than manufacturing the discs from raw materials, a bank of copiers are used to "burn" your data onto DVD-R. This burned data is then verified against the original master to ensure quality. We only use top-quality branded media, again to ensure the quality of your finished product.