Classification according to the design requirements of furniture doors: Generally, the hinge is distinguished by the relative position between the door panel and the side panel, which can be divided into three different hinge forms: full-cover hinge, half-cover hinge and built-in hinge.

Full lid hinge: The slender position in the middle of the full lid hinge is straight, also called the straight arm. After being installed on the door, it will cover all the side panels, which is generally used when only one door is installed on one side panel.

Half-lid hinge: The slender position in the middle of the half-lid hinge is bulged, also called the middle bend. After being installed on the door, it will cover half of the side panel, which is generally used when two doors are installed on one side panel.

Built-in hinge: The slender part in the middle bulges very high, also called the big bend. After being installed on the door, the side panel will be completely exposed, which is generally used for the installation of embedded doors.