Changed the traditional metal material, Enmu's bollards made of cast iron and cast steel, stainless steel, stone and other materials selected according to the customer's request, product appearance and color can be selected by the user customization. Base for removable bollards can fixed on the ground or underground, with key. Retractable bollards height can be made as required, can rise up or down to the ground as needed, with key. It widely used for site furnishings, walking street, road barrier, square, opening park, or just for preventing the vehicle enter.It will neither bring damage to the environment nor occupy any space.