Small and medium-sized food cans require a well adapted and sturdy bottom cover to ensure stable packaging performance throughout production, logistics, and long-term shelf storage. Traditional tinplate bottom covers often face problems such as loose edges, rusting at the bottom, and slight leakage, which can damage food quality and shelf display effectiveness. The 209 # 62mm tinplate bottom cover is a standard universal solution for medium and small food cans. It has precise dimensions, reliable corrosion resistance, and stable structural stability, making it very suitable for drying snacks, powdered raw materials, and weakly acidic canned foods, and has high cost-effectiveness.