First, choose materials according to indoor or outdoor use. Generally speaking, large-scale outdoor guiding signs include corporate logos, also known as spiritual fortresses and publicity columns. Small scope includes direction signs, flower protection signs, real estate building signs and other signs. The main body of this corporate logo generally adopts metal materials, such as stainless steel and galvanized sheet. When selecting materials, we should consider its wind resistance, sun protection, water resistance (rust prevention) and beauty. Stainless steel plate is a good material for rust prevention. The thicker the material used by big brands, the bigger the embedding, but it can't be too cumbersome. The bigger and heavier things are, the more time-consuming and laborious it is in the process of transportation and installation. The graphic part of the surface can be printed on the plane by screen printing according to your preference, and can also be pasted with acrylic, PVC, stainless steel word, etc. If you need to make it shine, use laser to hollow out the text content on the motherboard, and light the lamp inside, which can be covered with a layer of light-transmitting materials such as light box pieces or acrylic. Some enterprises use the whole blister light box to make logo, which requires high professionalism. It is best to find a big manufacturer to do it. Small outdoor signs include building signs, flower signs and business hours signs. The materials of small brands are diversified and can be selected according to customers' preferences and price requirements, so I won't go into details here. After talking about outdoor, let's talk about indoor signs. Indoor signs mainly include index sign, department sign, warm reminder sign, floor tag, floor index sign, elevator sign, personnel travel sign, desktop table and so on. The most commonly used material is aluminum profile, which will have various effects when used with materials such as acrylic, PVC and bicolor board. The production process includes painting, silk screen printing, carving, thermal transfer and so on. Not to mention engraving, it is nothing more than making a good picture and carving it with a carving machine. Quality mainly depends on the quality of the plate and the meticulous workmanship. Let's talk about the difference between silk screen printing and thermal transfer printing. Thermal transfer printing is more beautiful and tidy, and the cost is relatively low. But because it can't be exposed to the sun, it can only be used indoors, and the specifications are also limited. There are few large format brands that use thermal transfer printing.