A foundry of Hebei Iron and Steel Group Co Ltd in Zhangjiakou, Hebei province. (Photo provided to China Daily) Losses continued to mount for steelmakers in China during October, as the sector, once the mainstay of economic growth, reeled from overcapacity and waning demand. Large and medium-sized iron and steel smelters posted combined losses of 14.8 billion yuan ($2.3 billion) in October, down 27.8 percent…