步骤 3
扶手安装（如图）
①、扶手两边卡扣对好底座包边边的卡扣和后靠板侧边的卡扣（如图）
卡扣上一点的是卡后靠板侧边的卡扣
Step 3
Armrest installation
① The buckles on both sides of the armrest are aligned with the
buckles on the side of the seat cushion and the buckles on the side
of the backrest plate.
Lock the buckle on the side of the backrest plate.
