This frying pan utilizes multi-layer bonded technology, featuring a tri-ply structure: the inner layer is 304 food-grade stainless steel, ensuring safety and easy cleaning; the middle layer is a thick aluminum core for rapid, even heat conduction from base to sidewalls; and the outer layer is 430 magnetic stainless steel, ensuring compatibility with all cooktops, including induction. The interior and exterior surfaces are finely polished to a mirror-like finish, offering an attractive look that resists grime buildup; the pan is dishwasher-safe for convenient daily maintenance. The hollow handle design effectively minimizes heat transfer, ensuring a comfortable, cool-to-the-touch grip. With a heat tolerance of up to 600°F, the pan is suitable for use in ovens and various other cooking environments. Its multi-layer composite steel construction offers superior thermal conductivity, effectively reducing fuel consumption by approximately 20% for energy efficiency. Usage tips: Adjust heat levels based on the dish—use low heat for eggs, medium-low for standard cooking, and medium-high for searing meat. Before first use, please read the assembly instructions carefully; the screw for the glass lid handle must be installed from the inside out to prevent uneven stress that could cause the glass to crack.