... cr-ni molybdenum content, and add the copper elements, so 904 L even in reducing environment, such as sulfuric acid ... ability. Over several years developments, Tianjin Haohong weiye Steel Trading Co., Ltd has turned into an intergrated steel service center with combination ... surface, like No.4, BA, HL, SB, 8K, and so on.Sample Product Descriptionstainless steel plate/sheetGrade200,300,400series and ...