We want to express our sincere acknowledgement to the following:
Town and Talent Technologies Co., ltd
Huangjiazhai Town Government
Qinghai Aluminum Co., ltd
Mr. Lu Qing
Ms. He Xiao-song
Mr. Li, the head of Huangjiazhai Town Government
Mr. Zhang Wenlong, Ms. Wang Shuling, Mr. Shang Qingsheng, from Huangjiazhai Center School

In this homepage manufacture partial material origin:

datong.gov.cn

www.chalco-qhb.com

news.sina.com.cn/c/2006-11-30/094910647321s.shtml