1. First, choose a style from different types of hammock hanging trays as required, as shown in the figure below.
2. Here we choose a circular cross hanging plate and fix it with expansion screws, as shown in the figure below.
3. Then, print marks on the roof with hammock hanging plate, and punch holes with impact drill to place expansion screws, as shown in the figure below.
4. Finally, put the hammock hanging plate on the roof according to the position shown in the figure, and fix it with expansion screws, as shown in the figure below.