Lenovo ThinkBook laptop casings are built with durability and performance in mind. The top cover is made of aluminum for a sleek, strong finish, while the bottom uses lightweight polycarbonate. The casing is anodized or sandblasted to resist corrosion and fingerprints. Inside, a reinforced metal frame and tested hinges enhance structural integrity. Efficient thermal design includes strategic vents and heat-conductive materials to maintain optimal performance. Ports are CNC-cut with high precision and grounded to reduce electromagnetic interference. Altogether, these features offer a sturdy, cool-running, and professional-grade casing ideal for both productivity and protection in demanding environments.