Flotation is the processing of raw materials into a marketable product, using approaches that do not destroy the original physical or chemical behavior. We provide copper sulfate pentahydrate and zinc sulfate heptahydrate that are widely used in producing highly-selective, low-toxicity, and low-pollution flotation reagents. Activators and inhibitors for non-ferrous metal flotation in gold mine and lead-zinc mine are also available from Kangtai.