The KL-09 unbranded ergonomic office task chair features a streamlined, functional design tailored for extended seated use, with a consistent matte black finish that aligns with standard commercial office aesthetics. Its form includes a tall, contoured mesh backrest framed by smooth structural components, a wide padded seat, fixed T-shaped armrests positioned at standard desk working height, and a wide five-star base supporting smooth-rolling dual casters. An integrated curved clothes hanger sits fixed at the top rear of the backrest, offering unobtrusive storage for jackets and personal outerwear without disrupting the chair’s clean silhouette. Constructed for long-term durability, the chair uses a breathable woven polyester mesh backrest set in a glass-fiber reinforced PA nylon frame, paired with a seat built on a 15 mm thick E1 grade bent plywood core. The seat cushion holds 60 mm thick molded high-resilience polyurethane foam, topped with soft fabric upholstery for consistent comfort. Armrests are made of injection-molded PP with flat PU top pads, while the base is injection-molded black nylon, fitted with 60 mm diameter black PU dual-wheel swivel casters. Height adjustment relies on a Class 3 chrome-plated steel gas lift cylinder, and the tilt mechanism uses a 2.5 mm thick stamped steel butterfly chassis. The full chair weighs 15 kg, with a rated static user load capacity of 150 kg, and key wear components meet tested durability thresholds for caster rolling, mesh abrasion, and backrest tilt performance. Core functions support flexible, comfortable use: pneumatic seat height adjustment offers an 180 mm vertical stroke controlled by an under-seat lever, with maximum seat height reaching 620 mm to pair with standard 760 mm height desks. The chair enables full 360-degree swivel rotation, backrest recline to 125 degrees with single-position lock, and 60 mm vertical sliding lumbar adjustment to fit varying torso heights. The 360-degree swivel casters move smoothly across hard floors and low-pile carpet, and the mesh back reduces heat buildup during long seated shifts. The chair is suited for open plan office workstations, home office study spaces, staff administrative work areas, meeting and conference rooms, and call center seating deployments, with a compact footprint that fits small work areas without excess space. For procurement, note that each unit ships in 2 cartons, requires 40 minutes of assembly per set, and has a packaged gross weight of 23 kg per set; 135 sets fit in a 20GP container at 85% space utilization for bulk planning. Overall dimensions measure 670 x 675 x 1200 mm, with a 490 mm wide backrest, 500 mm wide seat, 460 mm seat depth, and 670 mm diameter five-star base, supporting consistent alignment across uniform workspace deployments.