Signs and signs are the instructi身林ons of public places. Th身鐘ey are used to identi司海fy contents and positions in the form技會 of words, graphics and symbols體務. With the development of ec生小onomy, signs and signs a話玩re widely used in life. They are吃去 divided into many kinds of materia機算ls: smooth signs, luminous materials,校雜 acrylic materials, metal下到, electric light board, etc. T業業he advertising indus讀討try is maintaining a fairly h討熱igh growth rate
