Alas, I said, the streets are full of LED displays, from shopping mall advertisements to subway signs, it is dazzling. But when I was about to buy it, I suddenly realized that this was like looking for a needle in a haystack. Last week, my cousin opened a gym and insisted on installing a cool display screen, but was scratched by various parameters. Let’s talk about where to buy this LED screen?

1. Find the right place and you will succeed halfway

Don’t say, looking for LED screens now is like ordering takeaway, with many channels that are dazzling. But there are only a few reliable ways:

• ​Online B2B Platform​: Don’t just look at the home page recommendations, you have to turn to 20 pages to find the source manufacturer
• ​Industry Exhibition​: Like the LED exhibition in Guangzhou, I went on a trip last year and found that many manufacturers directly brought production line models to the exhibition
• ​​Acquaintance introduction​: Lao Zhang, a decoration company, told me that the KTV project he handled, 80% of the display screens were designated by a certain manufacturer.

I remember seeing a hot pot restaurant owner who bought a screen on an e-commerce platform to save trouble. However, when I installed it, I found that the interface did not match, and I had to pay 3,000 yuan for the return fee. So,​ Finding the right person is better than anything else​​。

2. Don’t be a sucker when looking at the parameters

It is most likely for novices to fall into the parameter table. Remember these three sets of numbers to ensure you don’t suffer any losses:

1. ​Pixel spacing​: The smaller the number, the more money it is
   • The billboard that is 10 meters away is enough for P6 (about 20,000 pixels per square meter)
   • If you want people to get closer to see the details, you have to spend money on P2.5 (pixel points directly soar to 160,000).
2. ​​Brightness adjustment​：
   • Do not exceed 1200 nits indoors, otherwise the guests will have to squint their eyes
   • Outdoors below 4000 nits? It's like the fire is turned off on sunny days
3. ​​Protection level​：
   • With IP65 certification, you can be as stable as an old dog on rainy days
   • The most outrageous thing I have ever seen is that the gym has installed an indoor screen, but the equipment hits a snowflake.

A while ago, a chain of milk tea shops upgraded their stores and insisted on using the P3 ultra-clear screen. But they found that customers would not get close to the menu at all, and the extra 100,000 yuan was simply wasted.

Three and four major scenarios to get the seat

Buying a screen is like wearing clothes, and it depends on the occasion:
​​▶ Advertising​

• Street shop: Choose P6-P8 with intelligent brightness adjustment (can save 30% of electricity bill)
• Shopping mall atrium: Curved screen is the king, remember to anti-glare coating

​​▶ Stage performance type​

• Wedding company: The most cost-effective rental screen, the magnesium-aluminum alloy box is disassembled and assembled quickly
• Music Festival: 3840Hz high refresh screen is standard, and the videos shot without ripple

​​▶ Sports venue type​

• Basketball court fence: I have to withstand the ball and smash it. The most awesome screen I have ever seen has been hit by 50 dunks and it’s okay
• Timing scoreboard: 7680Hz refresh rate is the bottom line, slow motion replay cannot be blurred

​​▶ Creative interactive​

• Shopping mall floor tiles screen: The load-bearing standards are met. The floor tiles screen used by a certain brand event last year, and there are no scratches when you step on high heels.
• Transparent window screen: at least 80%, otherwise it would be like a matte film is applied.

4. Guide to inspecting and avoiding pits

These three axes must be swung to the best of your money:

1. ​Check ID card​：

   • ISO9001 certification is the bottom line, and CE and CCC certificates must be found at the latest annual inspection seal
   • I met a manufacturer to get the 2018 certificate to charge the number, but the product could not pass the customs at all.

2. ​​Look at the production workshop​​：
   Automated production lines are more reliable than sales, with manufacturers with monthly production capacity of over 10,000 yuan.
   Last time I visited a factory, I saw the robotic arm assembled the box and the quality inspector was rumbling. How could this quality be poor?

3. ​​To be a real case​：
   Don't believe in the renderings, just install the live video
   I heard that the fenced screen of a gymnasium in Tokyo has been subjected to more than 20 heavy rains in three years, but it has not been malfunctioned.

5. Don’t be careless after-sales service

Buying screens is not a one-time deal. These things are clear:

• ​Response speed​: 24-hour technical support is not a pity, there is really a manufacturer who remotely guides debugging at 3 o'clock in the middle of the night
• ​Accessories Inventory​: Ask clearly the reserves of commonly used modules, don’t wait for the broken modules to be imported for three months
• ​Training Services​: Good manufacturers teach operations step by step, and even the cleaning lady can learn to turn on and off the machine

The most tricky thing I have ever seen is that there is a screen bought in a scenic spot. I changed the power supply three times in the first year, and the manufacturer always refuses that it is a voltage problem. Later, I changed my home and I turned the screws twice in three years.

After all, looking for an LED screen is like a blind date - just looking at photos is not enough, you have to watch them everywhere. Those parameter certificates are like academic qualifications. Those who really live a life depends on whether their temper and personality are in line. If you are not sure about your mind next time, remember this sentence: you would rather go to three more factories than to believe in sales. By the way, I heard that some manufacturers can still view the installation effect remotely in AR. Isn’t this much better than talking about it on paper?

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