Are you always attracted by those colorful scrolling screens when you pass by the commercial street? But when I wanted to buy it, I found that there were 800 yuan to 800,000 yuan on Taobao, and the difference was enough to buy a BMW. Don’t panic. Today we will discuss this dizzy procurement problem, so that you can avoid detours for three years after reading it.

▎The first pitfall for buying screens: What you think is cheaper is actually more expensive
Last year, a hot pot restaurant owner tried to save money and spent 30,000 yuan to buy a second-hand scrolling screen. As a result, the subtitles were carded into PPT on the day of opening, and customers thought they were holding a faulty art exhibition. Here is a lesson to learn from blood and tears—​Don’t save these three money when buying LED screens​​：

1. ​Power supply module​ (The good ones can last for five years, but the bad ones will burn in half a year)
2. ​Control System​ (Just like the computer CPU, there are problems here when it gets stuck)
3. ​​Waterproof structure​(The outdoor screen does not have IP65 certification, just to be placed to catch rain)

I will teach you a way to identify the problem: let the seller demonstrate the gradient effect from pure black to pure white on the spot. If there is a colored shadow or flash, pass it directly without negotiation.

▎The "Traffic Light Rule" for Channel Selection
• ​​Red Light District​：

• Personal second-hand transfer (maybe there are hidden diseases)
• Cross-border e-commerce platform (after-sales response is slower than stoops)
• Distributors without physical exhibition halls (most likely to be a traitor)

• ​Green Light District​：

• Manufacturers with ISO9001 certification (quality system guaranteed)
• Those who can provide a three-year warranty (dare to promise means that they are confident)
• If there are overseas project cases (export standards are more stringent)

Let me tell you the truth. A chain supermarket in Southeast Asia installed a 30-meter-long curved scrolling screen last year. It turned out that the supplier used a modified indoor screen, which was short-circuited in full screen during the rainy season. Nowadays, people’s purchasing standards say “It must pass CE certification” in black and white, which is a lesson from spending money to buy.

▎The "Three-Looking Secret" behind the price fog
​​A look at the usage scenarios​：

• Milk tea shop cashier (P6 spacing is enough, about 12,000 per square meter)
• Shopping mall atrium (at least starting with P4, with a base of 28,000 per square meter)
• Outdoor advertising (brightness should be above 5000cd/m², don’t save this money)

​​Secondly, technical parameters​：

• Refresh rate ≥1920Hz (below this number, the eye pain will be felt after watching for a long time)
• Supports automatic brightness adjustment (power saving and eye protection)
• Box protection level IP65 (splash-proof is the basic operation)

​​Three-view invisible service​​：

• Is there any 7×24-hour technical support (can help you at critical moments)
• Can I diagnose the fault remotely (save the door-to-door inspection fee)
• Is the spare parts library complete (don't wait for an accessory for two months)

▎Self-question time
Q: Is modular design reliable for repairs online?
A: This is half true! Modularity is indeed convenient for replacement, but it is easy to get dust at the interface. Last year, a gym suffered this loss and had to be removed and cleaned up after half a year. It is recommended to choose a box design with dustproof rubber strips.

Q: How to determine whether the seller is a leather bag company?
A: I want them to post real-time videos in the workshop, and focus on three points:

1. Is there an automatic patch machine for the assembly line?
2. Is there a spectrum analyzer on the quality inspection table?
3. Is the warehouse materials arranged neatly?

Q: Are imported screens really better than domestic ones?
A: Don’t be fooled by foreign brands! Now the technology of large domestic manufacturers is no longer inferior to foreign countries. Do you know why 87% of Japanese and Korean merchants choose to make it in China? With the same parameters, the price is only one-third of the imported goods. Do you think it is fragrant?

Finally, I’ll say that it’s heart-wrenching: buying an LED scrolling screen is like finding a partner. It’s not enough to just look at the face (display effect), but also depends on the financial situation (technical strength) and sense of responsibility (after-sales service). Next time I go shopping, I will pay attention to the screens with stable and unstudy screens, which must be shipped by professional manufacturers. Remember, good screens should not be a burden to the venue, but a powerful tool to help you make money!

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