The JUESHANGDA Modular Donut-Shaped 360° Collaborative Lounge Seating, model CIRC-LOUNGE-2400, presents a sculptural annular form defined by a smooth circular perimeter and a central open void finished with dark upholstery matching the seating textile. Six interlocking curved segments connect to form a fixed full circular layout, with notched gaps between segments designed to hold portable nesting round side tables finished with light oak veneer over an MDF core. Low-profile radiating backrests sit at a height that delivers targeted lumbar support without blocking cross-space sightlines, supporting 360° outward-facing seating orientation for casual group interaction. The soft upholstered construction pairs a 1.5mm thick powder-coated steel tube and kiln-dried hardwood composite internal frame with 14mm bent plywood seat support boards, forming a robust underlying structure. Seat cushions use high-density polyurethane foam cores, while backrests are padded with medium-density polyurethane foam, all wrapped in light neutral textured performance polyester fabric. Zinc-plated steel interlocking connectors secure individual segments, and non-slip rubberized floor glides line the full base perimeter to prevent floor scratching and unintended movement. The removable fabric covers support easy spot cleaning or replacement to address wear in high-traffic areas, while segments can be disconnected to reconfigure into curved linear or semicircular arrangements as space needs shift. Each individual seat position supports a 300kg static load, with a recommended total capacity of six adult users, and the upholstery delivers durable performance for frequent public use. This seating system fits a broad range of commercial and shared residential-adjacent spaces: it works seamlessly in office breakout zones for casual collaborative work and informal meetings, creates inviting multi-seat waiting space in corporate lobbies, supports student group study and social gatherings in university campus common areas, adapts to dynamic team interactions in co-working open spaces, acts as a sculptural functional focal point in hotel lobby lounges, and offers relaxed flexible seating in public library reading zones. When planning procurement, teams should note that each set ships in two cartons, with a referenced assembly time of 40 minutes per unit, and that packaged units are sized to support efficient bulk shipping for multi-unit fit-outs. The light neutral fabric finish coordinates with most existing interior palettes, and the modular design allows facility teams to adjust layout over time without replacing the full seating installation.