Xining Hardware Mineral Import & Export (Group) Co., Ltd.
Qinghai Wu Tong (Group) Industry Co., Ltd.
Qinghai Tongli ferroalloy co., ltd.
Qinghai Huadian Ferroalloy Co., Ltd.
In 20 12 and 1 quarter, Qinghai exported 25,000 tons of ferrosilicon, down 15.4%, valued at 36.87 million US dollars, down 25.9%.