云南铜业(000878.SZ)：不直接生产铜箔

Group 1 - The company primarily produces and sells cathode copper, with by-products including gold, silver, and industrial sulfuric acid [1] - The company also recovers various rare metals such as molybdenum, selenium, tellurium, platinum, palladium, and rhenium [1] - The company does not directly produce copper foil [1]