Want to buy a blu ray DVD, look at the introduction, you can play Blu ray disc area code: C District /ALL (region), what does this mean? C area refers to China, what is the meaning of /ALL (region) behind it?
Joint Blu ray home sales are generally fixed in C District, also is our Chinese, when playing disc can only play C published the Blu ray and ALL in the region is the ability to play the rest of the world's Blu ray disc, most of the domestic machine can read the Blu ray disc, recommend domestic, domestic support.
Blu ray is an optical drive used to read blue discs. Blue light (Blu ray), or BD 405nm (Blu ray Disc), uses short wavelength blue laser to read and write data and hence its name. The traditional DVD requires light hair with a red laser (650nm) to read or write data. Usually, the shorter the wavelength, the more information can be recorded or read in the unit area. Therefore, Blu ray has greatly improved the storage capacity of the optical disk, and for the optical storage products, Blu ray provides a chance for leaps and bounds.
When you play the disc, you can only play the Blu ray Disc published in the C area, and the ALL region can play the Blu ray disc of other countries all over the world, and the domestic Blu ray machine can be read by the whole region.
