a.工作原理: 通过齿轮的开合操作, 枕头之间的角度, seat and bed is changed.

实现沙发与床之间的变形, and it plays a certain buffering role when closed.

b.优质材料: 碳钢冲压而成, the surface is plated with black zinc.

不容易生锈, 比一般金属结构更耐用, and the opening angle is about 85°.

c.使用寿命长: 强力弹簧由以下部分组成 15 线圈, 很有弹性, 并已经过测试超过 100,000 cycles.

安装提示: 由于安装板的材料和厚度不同, you need to choose screws of different lengths according to the installation video to avoid installation failure due to errors.

MRH 可调节沙发床硬件 3 位置角度机构铰链工厂...最先出现在。