Alas, did you find out? Now you can see the large LED screen wherever you go - the promotional information is scrolled at the mall entrance, advertisements are played in the subway station, and even the information disclosure screen is installed at the entrance of the community. But when I really want to buy it, the question arises: Who should I buy this thing? How much water is the price? How can we avoid being cheated? Today we will talk about something real and teach you step by step to find reliable suppliers.

1. Three major traps of choosing suppliers

Let me tell you a real case first. Last year, a chain of catering brands installed 20 outdoor screens in East China at one go, but in half a year, there was a color difference of 7 yuan and 3 yuan was directly blacked. The boss was so anxious that he jumped straight, and later he found out that the supplier was using second-hand lamp beads and the waterproof level did not meet the standards. ​ ​You see, choosing the wrong supplier can really cheat people at grandma's house​​。

There are currently three main types of pitfalls on the market:

1. ​​Falsification of parameters​​: For example, the nominal brightness is 5000cd/m², and the actual test is less than 3000 - this kind of screen cannot see clearly during the day
2. ​​Be inferior to good​​: Sell industrial-grade chips as commercial grades, and the price difference per square meter can reach 200 yuan
3. ​​Shrinking service​​: The promised three-year warranty, but I couldn't contact anyone in the second year

2. What screen should be selected for different scenarios?

A few days ago, a friend who runs a gym asked me: "I want to install a display screen in the exercise room and let members dance. Which one should I choose? "This involves specific needs. ​ ​Remember this formula: look at the spacing indoors, look at the protection outdoors, look at the structure in special scenarios​​。

Take a chestnut:

• ​​Shop window​​: Choose a transparent screen with a light transmittance of more than 85%, which will not affect the lighting and display dynamic advertisements.
• ​​Stage background​​: The refresh rate must be ≥1920Hz, otherwise it will be full of water ripples during shooting
• ​​stadium​​: You have to use IP65 protection level fence screen to withstand the sun and rain
• ​​Temporary Activities​​: The box of the rental screen must be able to be disassembled and installed quickly in 30 seconds, saving time and effort

3. 6 characteristics of high-quality suppliers

When I helped a chain of convenience stores select suppliers last year, I made a screening list, and the results were screened from 23 to the last 3. Here are a few hard indicators:

1. ​​See certification​​: ISO9001 is the bottom line, CE certification means export to the EU, CCC is mandatory safety certification
2. ​​See the laboratory​​: It is more reliable to show you the aging test report (usually, 72 hours of continuous testing is required)
3. ​​Look at the case​​: Those who have done international events are usually not too bad
4. ​​Look at the response speed​​: The technical team is on standby 24 hours a day
5. ​​Check out the accessories reserves​​: If you have a regional spare parts library, it can be repaired for 3-5 days
6. ​​Depend on R&D capabilities​​: Manufacturers who can customize special-shaped screens have stronger technical strength

4. Where is the price and moisture hidden?

A customer complained to me: "I asked three companies for quotations, and the P4 outdoor screens ranged from 3800 to 6800, which is too different! "Here is a breakdown of the cost composition:

• ​​Lamp bead chip​​(Accounting 55%): Imported chips are 15% more expensive than domestic ones, but have a lifespan of 20,000 hours more
• ​​Driver solution​​: The total driver can save 40% of the electricity bill, but the cost is 18% more in the early stage
• ​​Structural Materials​​: Aviation aluminum box is twice as expensive as iron sheet, but it can be used for ten years without rust
• ​​Intelligent system​​: The remote control function is 20% more expensive, but the operation and maintenance cost is reduced by 60%

For a specific example: For the same P4 outdoor screen, if you use a domestic chip + iron box, it may be 3800, but if you replace it with an imported chip + aviation aluminum box + intelligent system, you will have 5800. ​ ​Remember: expensive ones are not necessarily good, but obviously cheap ones are definitely problematic​​。

5. Precautions for installation and maintenance

Last month, a shopping mall installed a curved screen, but it was overheated and crashed on the day of its opening because it did not consider the heat dissipation issue. Here are a few key points:

• ​​Before installation​​: Be sure to measure the stability of the field voltage (the fluctuation cannot exceed ±5%)
• ​​During debugging​​: Focus on checking splicing seams (industry standards must be ≤0.1mm)
• ​​During acceptance​​: 72 hours of continuous playback test
• ​​Daily maintenance​​: Clean the heat dissipation hole once a month, check the waterproof glue strip before the rainy season

There is a tip: Choose a screen with automatic brightness adjustment function, which can save 30% of electricity bills in summer and extend the life of the lamp beads. This function is now basically standard for mid-to-high-end screens.

Personal opinion time

To be honest, this line of water is indeed deep. But from another perspective, it is precisely because of the high professional threshold that doing your homework is easy to find a reliable partner. I have seen too many people suffer great losses by greed for cheapness, and have also seen smart buyers who are willing to spend 20% of their budget to save worry for five years. remember:​ ​A good LED screen is not a fast-moving consumer goods, but a production tool that can help you make money​​. Now, do you know what aspects should you start from? Next time someone will ask you where to buy LED screens. Remember to throw this article to him!

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