Guangxi Nanning Junwei Feed Co., Ltd., a former manufacturer specialized in simplex feed-grade microelement additives, now has been transforming into a comprehensive enterprise which owns different quality product lines ranging from feed-grade microelements, microelement premix feed to compound premix feed. These products include: Copper sulfate, ferrous sulfate, zinc sulfate, manganese sulfate, cobalt sulfate, magnesium sulfate, calcium iodate, sodium nitrite, organic chromium in feed-grade microelement category.