​​"Hey, are you also wondering, where are the large LED screens all over the streets of China World Trade Center hidden? "​ ​ Last week, I accompanied an old classmate to look for advertising space. I walked around the CBD for three hours but couldn't find the management office. This is really not an exception - last year's industry report showed that 38% of merchants who installed LED screens for the first time had to spend an extra 20 days to find a location. Today we will break it apart and crush it to ensure that you will avoid unnecessary mistakes after reading it.

1. When looking for a screen, first look at these three golden points.

​​1. Crossroad control tower​​
Guess what? 80% of Guomao’s high-quality screens are hidden on the roofs of transportation hubs. These locations look inconspicuous, but the flow of people is three times that of ordinary streets. ​ ​Here comes the point​ ​: If you are looking for a screen with intelligent brightness adjustment, it must maintain a brightness of 4000cd/m² under the sun at noon to be sufficient. Last time I saw a catering brand using an ordinary screen, the screen looked blurry and mosaic-like in broad daylight.

​​Testing skills​ ​: Use your mobile phone camera to shoot at the screen. If there are ripples and flickers in the screen, quickly change the location - this means that the refresh rate is not 1920Hz, which is not good for advertising.

​​2. Blind spots on building facades​​
Here's a little trivia: Many office buildings have "invisible advertising spaces" hidden at 45° angles. Last week, I was looking for a space for the gym, and I was surprised to find a 20-square-meter space on the side of Building 3. ​ ​The key is to see​ ​The steel structure's load-bearing capacity exceeds 35 kilograms per square meter and requires additional reinforcement, which can account for 15% of the budget.

​​Money-saving tips​ ​: Choose a quick-disassembly rental screen. The aluminum-magnesium-zinc box is 40% lighter than the traditional iron frame and can be reused.

​​3. Shopping mall atrium ceiling​​
Don't underestimate this realm! Last year, a beauty brand installed a transparent screen here with a transparency rate of 86%, which doubled the customer flow. ​ ​Pay attention​ ​: This kind of high-altitude installation must be IP65 waterproof, otherwise the condensation water from the central air conditioner will make the screen "rheumatoid" in three days.

​​Lessons of blood and tears​ ​: There was a clothing store that installed a non-waterproof screen cheaply. It had to be repaired five times during the rainy season, and the repair fee was more expensive than the screen.

2. Choosing a screen is more important than finding a partner.

​​Brightness is a matter of course.​​：

• Indoors, choose 800-1200cd/m² for the best eye protection. Too high brightness will waste electricity.
• If the outdoor temperature is lower than 4000cd/m², you are acting like a hooligan. You can’t see anything when the sun is shining.

​​The refresh rate should be more realistic​​：
Take a slow-motion video of the screen with your phone. If you see scan lines, withdraw immediately - the video taken with this thing will definitely reveal the truth. Nowadays, industry benchmarks all start at 1920Hz. You got this number right.

​​The level of protection is about to reach​​：

• The area around the restaurant must be IP54-proof against oil pollution.
• The parking lot must be equipped with dust-proof IP65
• There is no IP67 in the open-air location. It is recommended not to touch it.

3. Only after stepping through the installation pitfalls can you understand

​​1. There are many problems with steel structures​​
One company's quotation stated "installation included", but when they arrived at the site they were told that they would charge a reinforcement fee. Later I found out that they calculated it based on the minimum load-bearing standard. Now that I have mastered it, I have to ask the construction company to produce a structural calculation sheet.

​​2. There are hidden secrets in after-sales terms​​
The worst supplier I have ever encountered, the warranty period starts from the time of leaving the factory. Half a month after the screen was installed, the warranty period was almost over. Nowadays, it is required to write "from the date of acceptance" in black and white.

​​3. The control system must be forward-looking​​
The screen was installed in the bookstore last year. I wanted to add a touch function this year, but the control system did not support it. Nowadays, when selecting screens, we focus on those that can be upgraded via OTA to avoid being eliminated by technology.

​​A few personal remarks​ ​: Let me tell you, the cost of curved screens will be reduced by half in the next three years. If you want to install a screen now, you have to reserve some space for upgrades. Don't use the whole straight screen to take up space. If you want to change it to a curved surface in two years, there will be no room to install it. Besides, the new magnetic installation is much more convenient than drilling holes. Do you think this is true?

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