The cage should be strong so that the bars cannot be bent or damaged by the parrot, and weak bars can be bent or damaged by the parrot and injure the parrot. Cages made of plastic coated railings can cause parrots to eat the coating and are not suitable. Quality cages are made of stainless steel, especially those made of colorful mild steel railings. Railing spacing is very important for the parrot’s safety, and the railing should always be small enough to prevent the parrot from poking its head out between the railing gaps. For small parrot species, column spacing of 1/2 inch (1.3 cm) is necessary. Medium parrot species such as grey parrots and Amazons require a 1 inch (2.5 cm) pitch, while great macaws can reach a pitch of more than 1 by inch (3.8 cm).

Hexagonal net structure can be used for slope support, excavation, rock surface net mine support form, slope vegetation (green color), railway road isolation block, it can be made into a cage, cushion, used for rivers, flood DAMS and seawall erosion protection and reservoir, river closed cage. Driving and directing river, river flood disaster is a major erosion of water river damage, resulting in flooding, resulting in a great deal of loss and property subjected to the amount of water and soil dissipation. Because of this, in dealing with these problems, the application of a lifestyle grid structure becomes a solution plan that has the potential to protect the bank forever.