为适应对环境保护的严格要求,新日铁开发成功新的汽车用表面处理钢板—无铬酸盐电镀锌钢板,并已正式供货给马自达公司使用。作为汽车用表面处理钢板,在日本大致分为两类产品:丰田汽车和本田汽车主要采用热镀锌钢板;日产汽车和马自达汽车主要采用电镀锌钢板。目前马自达汽车车体 In order to meet the stringent requirements for environmental protection, Nippon Steel successfully developed a new automotive surface-treated steel plate—chromium-free electro-galvanized steel sheet, which has been officially supplied to Mazda. As a surface-treated steel plate for automobiles, there are roughly two types of products in Japan: Toyota and Honda cars mainly use hot-dip galvanized steel plates; Nissan and Mazda cars mainly use electro-galvanized steel plates. Mazda car body at present