A 3D model of an escalator, featuring metal framework, black steps, and stainless steel handrails, with a modern minimalist aesthetic. It has highly detailed textures and is suitable for shopping malls, subway stations, and airports.

A 3D model of an auto mart vending machine, featuring a bright yellow body, glass doors, and a digital interface, with a modern, eye-catching design. It has multiple storage shelves and is suitable for retail and public space automated sales. （类目纠正：Auto Mart Vending Machine，属于Automated Retail Machine类别，更准确描述其功能属性。）

A 3D model of umbrellas, featuring varied colors/patterns (black, red, geometric gray, beige) and fabric materials, with a modern, minimalist design. It has clean lines and low-poly details, suitable for daily use or interior decoration.

A 3D model of a surveillance camera, featuring a polished white plastic casing and transparent dome lens, with a modern minimalist aesthetic. It has a high-definition lens and compact dome shape, suitable for security monitoring in indoor environments.