Chinese copper smelters should benefit as sulfuric acid prices keep rising, because acid by-product income props up smelting while treatment and refining charges sit near or below zero. Per @DeItaone, China signaled it will halt sulfuric acid exports from May. By profit sensitivity to each 100-yuan rise in acid, Yunnan Copper ranks ahead of Tongling Nonferrous and Jiangxi Copper. Yunnan's risk is low ore self-sufficiency, about 4%, half its peers', if expansion pushes charges more negative. x.com x.com x.comÂ

