单手折叠机构 one-handed folding mechanism

种高度调节和单手折叠 one height adjustment and one-handed folding

单手易折叠 easy to fold with one hand

单手轻巧折叠 easy to fold with one hand

单手紧凑折叠 compact folding with one hand

单手紧凑型折叠 one-handed compact folding