Recently when you watch short videos, you always see those moving advertising screens in shopping malls, right? Are you curious about where to buy this kind of LED scrolling screen that can turn pages by itself? My cousin was cheated when he opened a milk tea shop last month - the screen he bought for 8,000 yuan started to freeze after two weeks of use, which made him jump in anger. Today we will talk about this and teach you how to avoid the pitfalls that novices must step into.

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​​First figure out what kind of scrolling screen you want​​
Even though it is called an electronic scrolling screen, there are many tricks inside. Hanging at the entrance of the milk tea shop​ ​Poster scroll screen​ ​And in the subway station​ ​Information release screen​ ​Completely two different things:

1. Depends on indoor use​ ​Brightness 800-1200cd/m²​ ​, too bright and dazzling eyes
2. Essential for outdoor use​ ​4000cd/m² or more​ ​, otherwise it would be a blackboard under the sun
3. ​​Refresh rate at least 1920Hz​ ​, otherwise the picture taken with the mobile phone will be full of corrugated lines.

A manufacturer that supplies chain stores in Southeast Asia told me that they installed​ ​Intelligent brightness adjustment screen​ ​You can save 30% on electricity bills every year - this feature is now standard, don’t be fooled by older models.

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​​The hidden secrets of purchasing channels​​
There are three mainstream approaches now:

1. ​​Factory direct sales​ ​(Suitable for those who want more than 10 yuan, you can bargain)
2. ​​Regional service provider​ ​(Additional price but installation included)
3. ​​E-commerce platform​ ​(The risk is the greatest, I have seen people who shipped the wrong goods and refused to admit it)

Here comes the point:​ ​Be sure to watch the actual workshop video​ ​! For truly powerful manufacturers, fully automatic placement machines and aging test rooms are basic configurations in the workshop. I heard that there is a factory in Shenzhen with a monthly output of 10,000 square meters, and each screen must go through a 72-hour continuous lighting test. This kind of realism is reliable.

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​​Self-question and answer session: How to avoid buying a refurbished screen? ​ ​
Q: Many merchants say they support product inspection. What exactly should be inspected?
A: Teach you three killer moves:

1. Check the border seams for burrs (​ ​Aluminum magnesium zinc box​ ​Shouldn’t have)
2. Take a slow motion shot of the screen with your phone to see if there is any flicker
3. Ask to see​ ​CE/CCC certification code​ ​, the kind that can be checked on the official website

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​​After-sales is the highlight​​
The most outrageous thing I have ever encountered is that the screen was damaged by water and there was no warranty. I later found out that I had to check​ ​IP65 protection certification​ ​. A reliable manufacturer will have one​ ​24-hour technical response​ ​Last time there was a stadium project in Tokyo, the installation team encountered a problem at three o'clock in the morning, and the engineer provided direct video guidance until dawn - this kind of service is called true after-sales service.

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The editor finally tells the truth: when buying an LED scrolling screen, don’t look at the price tag;​ ​Is there a five-year warranty?​​、​​Do you dare to provide installation monitoring?​​、​​Can you come up with similar cases?​ ​. The next time you encounter a salesperson who is boasting about it, just ask him to bring up the real-time monitoring of the workshop and take a look - real gold is not afraid of fire, and a good screen is not afraid of inspection.

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