they are made of a lot of materials. For example plastic which is mainly used in the home. Then iron located in industrial warehouses. Then also wooden which can also be in the home. For example in rooms.
We can buy shelves at the store or make them yourself at home. There's nothing hard about it and a lot of handymen like to move around. Shelves are no complicated construction. When it comes to wood we only need wood and nails or dowels. Then just the classic tools and the product is ready. But handy hands are still needed.
Hygienic requirements must be met in warehouses of either industrial or conventional store stores. Food must not be placed on the ground. Shelves are used for storage.