规格：1800*580*550mm
功能：椅面后倾角度 10°，背部折起角度0-70°，
        腿部调节角度0-90°，护手上下调节：0-100mm

Size：1800*580*550mm                          
Function:  The angle of the chair is 10 ° , the angle of the
                      back is 0-70 ° , the angle of the leg is 0-90 ° ,
                      and the guard is 0-100 mm