cd

Some of the main factors that affect the lifespan of CDs and DVDs include: the manufacturing quality of the disc, how it is stored and handled, how it is used, and the type of data

The Netherlands is a small country but plays an important role in the history of great inventions.

The source of Cadmium (Cd) in the environment is increasing due to the development of the mining, metallurgy and farmland industry. Some foods contain Cd in very small amounts