Characteristics of public technology:
1, which is neither protected by industrial property law nor within the scope of proprietary technology;
2. Mastery needs a certain price, but you can master it yourself;
3. Usually it is more meaningful only if it is combined with patented technology or proprietary technology;
4, the transfer of public technology is usually to provide the corresponding technical services for the technology, because its rights are public, so there is no transfer of ownership or permission of the right to use.