CD copying is a process which copies data from the original CD to a Blank CD. Many CD copiers can copy multiple CDs simultaneously. Copying equipment is now widely used in offices and homes.The most common types of copying devices are single and multiple copiers.Single CD copier: This copier consists of two CD drives. One is used to hold the master CD and the other to hold the blank CD. These copiers generally don’t need any driver software or computer interface to carry out the process.Multiple CD copiers: Multiple copiers are very popular for carrying out duplication, and consist of a number of CD drives.If you’re planning on buying a copier, then there are a few things you should look out for.Size and form of the copier: Choose a CD copier that fits easily into the computers drive bay. There are also a range of standalone CD copiers on the market.Speed: It’s important to check the speed of the CD copier in order to ensure that the CD copying process is as quick as possible. Opt for a CD copier with a speed of 52X for fast burning. A fast CD copier can duplicate a 650MB CD in around three minutes.CD copying can be a quick and hassle free process if you buy the correct equipment.