Which word is more suitable for the advertising device on the roof?

The advertising characters installed on the roof generally adopt led exposed lamp luminous characters, plane luminous characters, metal characters, aluminum plate characters and so on.

Led exposed luminous characters: advertising characters with led luminous beads exposed, characterized by strong light, simple maintenance and high cost performance. Usually stainless steel, galvanized iron sheet and aluminum edge are used, which is very suitable for roof advertising and not suitable for close-up viewing.

Flat luminous characters: advertising characters with luminous front, usually made of stainless steel and galvanized iron sheet. Commonly used in advertising door, shopping malls, supermarkets, but also as a roof advertisement. It is characterized by high-end fashion and relatively high price.

Metal characters: advertising characters made of metal materials as a whole, generally made of stainless steel, galvanized iron sheet and aluminum plate, and can be painted externally. It is characterized by no power supply and strong corrosion resistance. But it can't shine at night, but the price is relatively favorable.

Aluminum plate characters: advertising characters made of aluminum plate, including led exposed luminous characters, plane luminous characters and metal characters, are all called aluminum plate characters as long as they are made of aluminum plate. It is characterized by much lighter weight and more expensive price than other advertising words.