Taiwan-VISA
Time：2014-07-25-----2014-07-27
Address：85 Sky Tower Hotel , Kaohsiung, Taiwan
For those who have Chinese passport and US green card (or F1, J1 and H1 visa) and are planning to go to Taiwan for Geoinformatics 2014, you have three options:
1) You fly to Taiwan from USA directly, you just need to apply for a Taiwan visa;
2) You fly to mainland China and then, go to Taiwan, you need to apply a Hong Kong (or third country) visa and a Taiwan Visa. It is not difficult to get both visas in US, but you need to prepare for the two visas early (i.e., 3 months before the conference). You can not come to Taiwan from mainland just with a Taiwan visa. You need to go to Hong Kong (or third country) first, then enter Taiwan with a Taiwan visa.
3) You can apply a Travel Permit for Mainlanders to Enter and Exit Taiwan （Taiwan Tong Xing Zheng) in mainland, then you can enter Taiwan from mainland China with a Chinese passport and this permit.
In conclusion, for those without an USA passport, option 2 is better if you want to come to China first next summer.
The referenes: http://blog.sina.com.cn/s/blog_6ce3ad490100lmqm.html
http://www.liuxue86.com/a/20130603/1247130.html
