Phu Tho is place have the suitable climate and soil conditions for the growth and development of tea, the People's Committee of Tan Son district, Phu Tho province hosted the project "Building the model of intensive cultivation and processing of high-quality green tea varieties in the buffer of Xuan Son National Park, Tan Son district, Phu Tho province " from December 2008 to June 2010. The project há achieved its objectives, gaining economic-social efficiencies. In particular, with the ability to replicate, is one of the project demonstrates the application of science and technology to exploit the advantages in mountainous regions and remote areas.