Ming Yang, the Chairman of Gulf Resources, is the majority owner of Shandong Haoyuan Industry Group Ltd in which the article is referred.
Shandong Haoyuan Industry Group Ltd. owns 4,124,733 shares, a 11.9% percentage in GURE (data 04-28-11). Shandong Haoyuan Industry Group has only one subsidy, the ShouGuang holy bang chemical Co., Ltd. Because of the 11,9% and Mr. Ming Yang who is related with both companies, they consider GURE as an affiliated company.
But that's all. Your find is interesting and gives food for thought, but it's too early for me to agree with you about the strong possibility of a privatization deal.
...on second thought, I feel relief for keeping all my shares until now, despite my profits.