人体工程学主席

Backrest: Black PA + Fiberglass Sponge: Shaped sponge lumbar support, adjustable up and down Mesh: Professional office mesh finish, single-sided and double-sided mesh available Armrests: Black 3D armrests with PU cover, adjustable up and down, forward and backward, and left and right 12mm thick wooden seat with bottom shell Chassis: High-density shaped sponge with three-position locking and sliding chassis Gas rod: 85°，8厘米，三阶段黑色燃气杆脚：340＃黑色尼龙五星脚车轮：∮60黑色PU轮毂尺寸：770*350*640mm