OBS_VALUE: The operation term of an investment project on the certificate in an economic zone shall not exceed 70 years and shall not exceed 50 years in a non-economic zone. Upon the expiry of the operation term of an investment project, if the investor wishes to continue implementing the investment project and meets the conditions prescribed by law, the investor could ask for a renewal extending the operation term of the investment project.However, there is no duration limitation for the rail transports licences.