Some industry insiders said that the price increase of international domains such as .com is also related to the supply and demand relationship of domains. Domains with .CN require a long process of complicated examination and approval procedures and materials for registration in China. Individuals are also unable to register .CN domains. These factors have resulted in users who originally belonged to the .CN domain group flowing into international domain groups such as .com. The change in supply and demand relationship has also subtly affected the price.