A 3D model of an escalator, featuring metal frame, black steps, yellow safety lines and a modern industrial aesthetic. It has low polygon count, dual tracks with handrails and is suitable for commercial buildings, airports, metro stations.

A 3D model of a one-way retractable barrier gate, featuring stainless steel construction and a blue arrow sign, with a modern minimalist aesthetic. It has a stable, low polygon count and is suitable for commercial or transit areas.

A 3D model of a folding hand truck, featuring a metal grid frame, platform, and caster wheels, with a minimalist, functional design. It has a foldable structure and is suitable for warehouse, retail, and moving scenarios.

A 3D model of a Warning Light, featuring a gray metal panel with a red circular light, screw-fastened edges, and horizontal grooves. It has low polygon count and high detail, suitable for industrial warning, safety标识, and 3D product visualization.