SUS304 (Cr 18–20%, Ni 8–10.5%, C ≤ 0.08%) — The industry-standard food-grade stainless steel; excellent corrosion resistance, non-reactive to acidic foods, easy to form and polish. Suitable for: divided plates, lunch boxes, bento boxes, mixing bowls, gastronorm pans, buffet trays, drinkware, food storage containers, bakeware, and all direct food-contact products — the default choice for commercial and institutional kitchenware.