The activation code is used once and becomes invalid after use. Many activation codes with times have exceeded their counting limit when installing the system or reinstalling the software, or decompressing and running his software. So an activation code can only activate one device.

Founded in 2002, Future Education Research Center is a knowledge-based enterprise specializing in the planning, research and development and sales of educational products. It rises in Zhongguancun, the center of education, culture and science and technology in China.