Extending a Chinese visa is usually not so difficult, although prices, waiting times and rules differ from region to region. Costs reported are between 160 and 200 yuan. Extensions are made in a PSB office, situated in all larger towns and cities of China. An extension lasts for 30 days and starts when your first visa expires.
You can extend your visa once or twice. This depends on the duration of your original visa. Your total extensions on any one entry to China cannot exceed the length of your original permitted stay. If you have a 30-day visa, you can extend for a maximum of another 30 days. If you have a 60-day visa, you can extend a second time.
It’s possible some PSB offices overlook this technicality and grant a second extension on a 30-day visa. But the law is pretty clear it’s not permitted.
Extending a double entry visa
Previously, it was not possible to extend your first entry of 30 days without losing the second entry, since the PSB office actually gave you another visa that voided the original one.
Since 2013, that is no longer true. The same rule detailed above counts. For instance, if you have a double entry visa with an original permitted stay on each entry of 30 days, you cannot extend for more than an additional 30 days on each entry.
This means you should extend after your first entry, and again after your second entry, to squeeze the maximum amount of days out of your visa.
June 2018: Could not apply. Was told to go to Jiayuguan.
June 2014: second extension. 160 yuan, 1 day turnaround. Like Hami, don’t apply too early, we applied 7 days before and were told to come back 4 days before (ideally I think they want you to apply as close to the expiring date as possible).
May 2014: could not apply, no stickers
July 2015: 3 day turnaround, easy.
July 2015: 4 days turnaround, difficult to find cheap accommodation.
June 2018: 1 week turnaround, 160 yuan.
July 2018: I got a first extension in Golmud very easily, 2 days, English-speaking woman in charge.
April 2014: Apply for extension 7 days before your current visa expires. Less than 7 days before your visa runs out might be a problem. 3 days turnaround.
Police Station GPS coordinates : 32.998429 97.009039. PSB GPS coordinates : 33.015956 97.031771. Yushu visa extension reports in this forum topic.
July 2018: They ran out of visa papers and were not able to extend the visa. Otherwise it looked very possible.
May 2016: At first, you must go to a “registered” hotel. Then go to the Police Station to get the registration paper. Then go to the PSB. 1-day turnaround, 200 yuan. They don’t care at all about how much time you have left on your visa: you can come when you want (even the first week of your first visa), they will start the second visa from the end of the current visa.
June 2018: Could not extend.
May 2016: not possible.
April 2018: 1 day turnaround, 160 yuan.
October 2015: 1 day turnaround.
September 2014: 2-3 days turnaround, but cheap accommodation is difficult to find.
September 2014: Not possible.
Visa office is NOT located at the main PSB. It is on the S.E corner of Wen Hua and Zhong Shan Nth Rd. Hami extension reports collected in this forum topic.
June 2014: I applied 7 days before expiry, but that was too early according to the officials (try arrive with less than 3-4 days left on your visa). 1 day turnaround, but make sure the office head is in.