Upholstery: Premium Italian imported top-grain cowhide leather or KOYI brand high-quality PU leather.

Foam: High-resilience premium foam; seat with 40# high-density foam; backrest filled with high-density doll cotton.

Plywood: Density ≥600kg/m³, moisture content ≤9%. Processed with high-temperature steaming, drying, and lamination — resistant to deformation, pests, and mildew.

Base & Gas Lift: Height adjustable with forward-tilt multifunctional mechanism (executive tilt base). Equipped with Xieqiang TUV-certified Class 3 electroplated beveled daisy-core gas lift.

Armrests, Base & Casters: Made of ADC10 high-grade steel with one-piece die-casting. Double-polished steel base (rough + fine), with lower carbon and lead content for higher environmental standards and brighter finish. Custom-molded black PU shock-absorbing silent casters.