A 3D model of a promotional display stand, featuring minimalist black and white color scheme, segmented layout with text content and a modern aesthetic. It has clean geometric forms and is suitable for event promotion, product display, and information communication.

A 3D model of a foldable shopping cart, featuring black metal frame, yellow handlebars, and wire baskets, with a modern minimalist aesthetic. It has foldable design, smooth-rolling wheels, suitable for household storage, outdoor use, or daily shopping. （类目纠正：foldable shopping cart，原Other不准确，实际为便携折叠购物车）

A 3D model of an escalator, featuring black steps, metallic handrails, and a gray base, with a modern minimalist aesthetic. It has low polygon count and is suitable for commercial spaces, shopping malls, or metro stations.

A 3D model of a promotional book display stand, featuring a digital screen, metal frame, and minimalist design. It has a stable base and high-definition display, suitable for retail bookstores to showcase clearance sales.