AT-8339 ● 椅座尺寸 Seat size:450(W)×420(D)mm ● 椅背尺寸 Ba:415(W)×290(H)mm ● 矮椅座位高度 Low chair seat height:420mm~570mm ● 靠背簧 Conection:65Mn弹簧钢 spring steel、 镀铬钢管 Chrome-plated steel ● 底 盘 Seat panel:3mm厚冷轧钢板 cold rolling steel plate ● 气体阻尼式无油气缸 Oil free air cylinder 140mm ● R320铸铝五星爪Cast aluminum five-star claw、R300碳钢镀铬五星爪 Five-star chrome steel claw ● 不锈钢包边转动轮 Stainless steel package edge rotating wheel、蘑菇形黑色(白色)脚轮Round black |