​​Hey, do you know where the LED naked screens in the mall that don’t have shells come from?​​
Recently, I helped my friend decorate the exhibition hall and found a naked LED screen and almost broke my legs. The price of Taobao ranges from 80 to 800 yuan per square meter, and the manufacturer said that "industrial" and "commercial" are simply unmatched. Today we will break it apart and explain it clearly, these​The LED module that can be directly on the wall​​Where should I go? After reading it, I guarantee you to pay less tuition!

1. You can’t buy a nude screen if you want to.

Sprinkle cold water first: 87% of naked screens on the market cannot meet the engineering standards at all! What is truly reliable depends on three hard indicators:

• ​Protective coating​: It must have a nano-hydrophobic layer, otherwise it will fog after half a year.
• ​​Pad technology​: Copper substrate + gold-plated contacts can withstand low temperatures of -30℃
• ​Driver compatibility​: Only those who support at least 5 control systems are qualified

There is a bloody and tears case: a certain exhibition used a miscellaneous nude screen, but the console could not be connected. Finally, it was manually debugged one by one. The 200 square meters screen was adjusted for three days and three nights! So say​Buy a nude screen and ask about the compatibility of the protocol first​​, mainstream systems such as Novastar and Huidu must be supported.

Second and third major procurement channels PK

Comparing P3 nude screen (10 square meters) is a very different channel that is so scary:

Key reminder:​There must be tricky if the price is 30% lower than the market price​​! Last week, a customer bought a batch of "Special P4 naked screen", but the grayscale can only display 12 bits, and the sky is full of color blocks. Remember to be sure​Refresh rate ≥1920Hz​and​Intelligent brightness adjustment (800-7500cd/m²)​Model.

3. Five acceptance tips that experts know

1. ​Take videos with your mobile phone​: Adjust to 1/1000 shutter, the screen has no ripple to be considered qualified
2. ​​Splashing test​: The true hydrophobic coating is the one that rolls off at a 150° contact angle
3. ​Temperature difference challenge​: Use a hair dryer to blow to 60℃, then put it in the refrigerator to freeze and see if it changes color
4. ​Stress tests​: Press the lamp bead with your fingers forcefully, and the displacement is ≤0.02mm is considered industrial grade
5. ​​Grayscale detection​: Play 256-level grayscale images, and be able to clearly distinguish each color block

The fenced screens we made for the Tokyo Stadium have withstood these tests and remained stable for three years on a blizzard at minus 15℃. So say​All nude screens are abused​, I dare not let the inspector pass directly!

4. These invisible fees make newbies cry

Do you think naked screens are cheap? Hidden costs exceed budget in minutes:

• ​​Installation bracket​: Special arc structures charge 200-500 yuan per square meter
• ​Signal extension​: Repeater must be added for more than 100 square meters, and one set costs 8,000+
• ​Power Management​: Smart distribution cabinets are 3 times more expensive than ordinary ones, but they can save 40% of electricity bills
• ​Maintenance channel​: Reserved maintenance space will increase the actual installation area by 15%.

There was a shopping mall project that suffered a big loss - the cooling space was not calculated well, and 20% of the lamp beads were burned after three months of installing the naked screen. Remember​The purchase volume should be calculated as 1:1.15​​, don’t be stingy about this budget!

Say something that the manufacturer doesn't like to listen to

The biggest pitfall in this industry is not quality, but​After-sales response speed​​. Last year's New Year's Eve event, I saw a brand of naked screens with my own eyes, and the technical team did not attend 48 hours. So be sure to confirm before signing the contract:
✓ 24-hour online technical support
✓ 6-hour emergency response within 500 kilometers
✓ The stock of standing modules ≥5% of the total

Next time I see those LED naked screens in the mall that can resist and fight with "free face" and can be selected according to these tricks. Remember,​The good screen depends on products and 70% of service.​, I regret it if I am cheap!

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