Hey, have you also encountered this kind of embarrassment? I searched online for three days and nights and asked more than a dozen suppliers, but in the end I was still not sure where to buy LED screens. Don't worry, today we will use the thinking of choosing building materials for decoration to clarify the doorways in this industry for you.

​​Procurement channel comparison table​​
Last month, I helped a shopping mall upgrade equipment. Their purchasing manager showed me this comparison table:

Here’s a little bit of trivia – products with three major international certifications have a failure rate 63% lower than ordinary products. Just like looking for the energy efficiency label when buying appliances, this detail can screen out 80% of inferior products.

​​Four quadrants of parameter selection​​
When purchasing an e-sports stadium last year, we used this decision-making model:

1. ​​Required​ ​: Refresh rate ≥1920Hz, with intelligent brightness adjustment
2. ​​Bonus points​ ​: IP65 protection level, front maintenance design
3. ​​Caution items​ ​: The nominal brightness exceeds 8000nit (actual use will cause severe color cast)
4. ​​Veto item​ ​: No anti-blue light certification (eye damage), no heat dissipation test report

For example: For commercial advertising screens, the indoor brightness of 800-1200nit is just right, just like the automatic brightness of a mobile phone screen. It can be seen clearly without overexposure. The outdoor screen should start with 4000nit, so you can see the subtitles clearly under the bright sun.

​​Three axes for avoiding pitfalls during inspection​​
A customer spent a lot of money to buy a screen that showed color differences within three months. These three inspection tips can save lives:

• ​​Power on detection​ ​: Use a solid color test image to check whether there are dark spots (especially the red image)
• ​​splicing test​ ​: Play dynamic video on adjacent cabinets to check whether there is any lag.
• ​​stress test​ ​: Continuously play 4K video for 8 hours and observe the heat dissipation

Special reminder: Rental screens with quick-release structures must be tried and installed on site. An event company bought the wrong model, which resulted in an extra three hours of set-up time and heavy losses.

​​Editor's opinion​​
After more than ten years of hard work in the industry, I have discovered a truth: suppliers who dare to provide full-cycle technical support will basically have good products. Just like a restaurant that dares to open its kitchen, the ingredients must be fresh. Recently I saw a floor tile screen used in an international competition. The display was still accurate even after being stepped on 100,000 times by athletes. This kind of product that can withstand the torment is the real thing. Next time you choose an LED screen, you might as well ask the supplier if he dares to sign a "compensation in advance" agreement - anyone who dares to pat his chest must be someone with hard goods.

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