We recommend CD replication for disc quantities over 500. CD replication is a more complex process. It includes the creation of a glass master from your original master, a nickel stamper created from that glass master, and the injection molding of clear optical-grade polycarbonate substrates (clear discs) from the nickel stamper. The process also involves the metalizing and lacquering of those polycarbonate substrates to produce a perfect copy – an exact replication of your CD or DVD disc. CD replication cost-effective for larger quantities.