The process of manufacturing a CD where discs are created through injection molding polycarbonate plastic. These 'green discs' are then aluminum plated and another 'top coat' of plastic is applied for the label. Generally, a batch of one thousand discs is the smallest quantity that a replication plant can cost-effectively offer. This process yields a very high-quality, professional product, and is not to be confused with duplication which is of lesser quality.