I. CD size:
1, large disc: outer ring diameter:120mm; Diameter of mesopore: 15mm.
2. CD: outer ring diameter: 80mm；; Diameter of mesopore: 15mm.
Second, the CD box size:
1, thick box:122x121mm.
2. Thin box:125x121mm.
3. Back cover: 120x 145mm.
Three, vinyl record size:
1, outer ring diameter: 30 1mm?
2. Diameter of middle hole: 7mm
Extended data:
CD function:
1, you can make your own CD at low cost on a desktop PC.
You can choose any suitable information to record in CD format.
3. Avoid expensive training expenses and copying facilities related to business training. Because the typical CD-R medium has a lifetime of 70- 100 years, it is an ideal choice for long-term data preservation. This is a significant improvement for magnetic media with much shorter life. CD-R technology is a breakthrough, which will introduce the next revolution of data storage technology, because in this era of information explosion, the demand for large capacity is increasing.