It is also called PSB Permit, it is issued by People's Security Bureau. You need it when you travel out of Lhasa area, such as Tsedang, Gyantse, Nyingchi¡ there is a sample of PSB permit as follow:
It is issued by military affairs office. You need it to pass the chek-in when you travel to un-open area such as Mt.Kailash area.
Where and How to Apply for a China Visa? - Top -
China Visas can be applied for at Chinese Embassies and Consulates throughout the world. Applications must be made in person and cannot be mailed.
Obviously, you may not always be able to go in person to the Embassy or Consulate that has consular jurisdiction over the country/state where you reside, most Travel Agents can help process your visa.
Alternatively you can use a Visa agent that takes care of the process for you. You mail the required documents to them and they bring and process your visa at the required Consular office. You can follow the status of your application online and is really a good alternative when you don't live nearby any of the Consular offices. Here are some online Visa Agents that can help you apply for your China Visa:
You need to submit the following materials for your application:
You can apply for a visa in the country where you are a resident, regardless of your nationality, i.e. a U.S. citizen living in the U.K. could apply for a China Visa in the U.K. When applying in a country different from your nationality, additional documentation is needed, for example a copy of your resident permit.
Where and How to Apply for a Tibet Entry Permit? - Top -
About tibet permit agent that we can help you, but you must provide for tibet permit the information to us, if there is any questions, please contact us.
Where and How to Apply for a Alien's Travel Permit? - Top -
We can help you apply for Alien's Travel Permit, but at the time you book the tour with us, please send us following information of each member of your party.