Are you ready to buy an LED advertising screen but don’t know where to start? Last month, I met a boss who opened a chain store. I bought a screen on an e-commerce platform to save trouble. However, when I installed it, I found that the power interface did not match, so I had to order again and delayed the opening of the business for half a month. This is not an isolated case, industry data shows​ ​32% of procurement disputes arise from choosing the wrong purchasing channel​​。

​​Is buying screens online really cheap? ​ ​

When browsing shopping websites, look at the advertising screen with a price of 8,000 per square meter. Don’t rush to place an order. Last year, a merchant launched the banner of "factory direct operation", but the customer only found that it was a refurbished module when he received the goods. Remember these three key points for preventing pits:

1. ​​Look at the certification number​ ​: The serious manufacturer will post the CCC certificate number on the product details page
2. ​​Check production actual photos​ ​: Require video connection to view the workshop assembly line
3. ​​Trial effect​ ​: Let the seller conduct a signal source demonstration grayscale transition

Let me give you a real case: a convenience store owner ordered an indoor screen online. After arriving, he found that the brightness could only be adjusted to 500nit, which could not suppress the spotlights of the store. So,​ ​Brightness adaptive function​ ​(Indoor 800-1200, outdoor 4000+) This parameter must be written in the contract.

​​What should you pay attention to when it comes to physical stores? ​ ​

When you go to the building materials market to see samples, don’t be fooled by the display effect. I will teach you a tough trick - bring a USB flash drive to save three types of test videos: solid color blocks, fast motion pictures, and small text. Focus on:

• Does the red overflow (the inferior screen will get pink)
• Is there any drag on the quick screen?
• Are the edges of small fonts clear?

Once I accompanied my friend to pick up the screen. The 4K promotional video used by the store was beautiful. I replaced it with the EXCEL form test file we brought, and the text was directly pasted into a mosaic. So say​ ​You can't just watch promotional videos when watching the screen, you have to simulate the actual usage scenarios.​​。

​​What are the hidden benefits of direct purchase by manufacturers? ​ ​

Just find a manufacturer with a production base in Bao'an, Shenzhen (70% of LED screens in the country are produced here), which can unlock three hidden advantages:

1. ​​Customized model opening​ ​: For example, special shaped splicing or special heat dissipation structure
2. ​​technical support​ ​: Engineers online 24 hours a day can remotely debug parameters
3. ​​Spare Parts Library​ ​: Can quickly replace modules in case of sudden failures

Last year, a gym was going to install a curved screen and found a manufacturer that could provide aluminum, magnesium, zinc alloy boxes, and the installation time was 40% shorter than usual. The key point is here——​ ​Manufacturers with monthly production capacity of over 10,000​ ​, usually there is ready-made module inventory, and there is no need to wait for the production cycle.

​​How to avoid lightning when orders overseas? ​ ​

Friends who do foreign trade should pay attention to the screens that export to Japan, South Korea and Southeast Asia:

• Sea shipping anti-salt spray packaging (ordinary cartons cannot support the wet cabin)
• Voltage adaptive design (Japanese 100V and Southeast Asia 220V should be compatible)
• Multilingual control system (at least it must have a Chinese-English operating interface)

The most outrageous case I have ever seen: a manufacturer's screen exported to Thailand was not treated with moisture-proof, and the control card was wiped out after the rainy season came. so​ ​IP65 protection level​ ​This indicator is a life-saving symbol in humid and hot areas.

Personal opinion: Buying an LED advertising screen is like finding a marriage partner. Just looking at the appearance (display effect) is not enough. You also have to check your family background (technical background) and ask about your medical history (after-sales guarantee). Next time I meet a seller with a very low quotation, remember to ask "Do you dare to sign a three-year warranty on this screen?" It is guaranteed to be able to test the depth.

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