Feature

●▲Butt hinge is normally used for cabinet doors. They are very strong but cannot be adjusted once they are fitted.
●▼For the connection of sofa back and back,
●▼Adjustable sofa back height
●▼Can not be disassembled at will
●▼backrest and seat,


Description

By gear operation,
Change the angle adjustment between the seat and the bed,
Easy to install,
Adopt gear opening and closing position card design,
Multi-angle, multi-range.