homer: I can register you as a foreign purchaser, and then you will get a badge at the entrance to go in for free. No need to come with me. If you have Chinese people coming with you, they can also go in for free.
GBTEXDOC:
The fair will be held in the Kunming International Convention and Exhibition Center (中国昆明国际会展中心). The address is: 289 Chuncheng Lu, Kunming (昆明市春城路289号)
You can get there by bus, taking nr 31, 32, 52, 57, 67, 86, 107, 122, 134 or 154. Get off the bus at the "International Trade Center" bus stop (国贸中心, Guomao Zhongxin) and follow the flow of people.