The compact disc is a good information carrier,it can store a great deal of data,and it is light,easy to take,can be used for information store,production drumbeating.Now the disc capacity has 45M, 200M, 700M, 1.4G, 4.7G, 8.5G.

The disc is composed of disc tray,disc content,disc tray picture,disc package.

The disc tray is composed of plastic piece,register piece,reflect piece.The plastic piece material is polycarbonate.There are two kind of production,the one used whole new polycarbonate is called the original polycarbonate disc,the other used old polycarbonate is called the second polycarbonate disc.

The disc content can be copyed by burning or replication.The burning,namely,is burned by CD writer or DVD writer.The replication is applicable for great deal of disc copying.Make a mother metal disc to contain information content,then put it on stampers which are used for injection molding the information onto foil.After that,the information is protected by layers of polycarbonate and glue.

There are several ways to print the disc surface picture:offset printing,screen printing,inkjet printing.The offset printing uses mackintosh to print picture from forme,its printing precision usually is 175 thread per inch.The offset printed picture is subtle,touches smoothly.The screen printing uses compact mesh to print picture,its printing precision is 80-133 thread per inch.The screen printed picture touches like tiny sand,have strong feeling of drawing layer.The inkjet printing just uses inkjet printer to print the picture.

The disc package have simple disc paper bag,PP disc double side bag,thin and thick plastic box.You can also customize disc packages,such as the disc bag printed by 250g (gram per square meter) coated paper,the disc long plastic box foldout printed by 128g coated paper,and the disc thick plastic box foldout puckered side by side by 157g coated paper.