Alas, you said that the streets are full of LED display advertisements, such as those who open stores, organize events, and decorate. Who doesn’t have the idea of installing a screen? But do you know? My cousin opened a milk tea shop last year and bought a display screen online at a cheap price. As a result, the screen was black on the day of installation, and the after-sales phone was always busy. Today we will talk about how to choose this LED display so as not to step on the wrong side.

​​First, let’s focus: Buying a display screen is not buying cabbage! ​ ​
Do you believe it or not? Some merchants regard the renovated second-hand lamp beads as new ones, and the color block fault occurs after three months of use. Remember these three life-saving tips:

1. ​​It is better to look at the quality inspection process than to look at the factory​​——A truly reliable manufacturer has an X-ray detector on its production line
2. ​​Don't be fooled by "low price and all inclusive"​​——The post-cabling fee may be more expensive than the screen
3. ​​High refresh rate is not a panacea​​——1920Hz is enough for indoor use, no matter how high it is, it is a waste of money

Finding the right place is more important than bargaining

It is quite interesting to have an old company in Shenzhen. They have an automation workshop of tens of thousands of square meters in the industrial park, which is specially supplied to the Japanese and Korean markets. Guess how they control quality? Each box must undergo 72 hours of high temperature and high humidity test before leaving the factory, and even the screw torque value must be recorded. The goods shipped from this factory were installed on the Tokyo Stadium fence for three years and have not failed.

​​A must-have list for purchasing​​：

• Required to read the "Component Traceability Report" (focus on the lamp bead brand and power supply model)
• Installation 3D simulation diagram must be provided (to prevent it from being unable to install after buying it)
• The brightness attenuation standard is stated in the contract (no more than 5% per year is considered qualified)

These parameters hide the great questions

Last time I helped the gym owner choose floor tiles screens, I found an inside story in the industry: the "high definition" that many businesses talk about is actually a change of concepts. There are three things to see:

1. ​​Intelligent brightness adjustment​​——Indoor 800-1200 nits is just right, too bright and hurts the eyes
2. ​​Transmission rate is above 86%​​Only transparent screen can be used as a window
3. ​​IP65 protection level​​Fence screen still works on rainy days

If you have a cold knowledge, you may not know: the current high-end rental screen can be disassembled and installed by two people in three hours, and they all use aviation-grade aluminum magnesium zinc alloy boxes. Those who need to weld the brackets on site, don’t consider them as soon as possible!

After-sales service is more important than sales

Let me tell you a real story: The transparent window screen in Myeongdong Commercial Street, Seoul, actually provides a monthly remote physical examination service. Engineers can predict which module is about to break through the background data, and bring spare parts to the door before there is any problem. This kind of service is much more than a "five-year warranty" short check.

​​Pit avoidance guide​​：

• Choose a 24-hour technical hotline (you can find someone if you crash in the middle of the night)
• Requires "Installation and Debugging Video Tutorial"
• Confirm the storage volume of spare parts warehouse (don't wait for maintenance to tell you that there is no inventory)

The truth about custom services

Recently, a milk tea chain brand was doing something, and their front desk LED signs were to be wavy. Guess how reliable manufacturers deal with it? A three-dimensional modeling team was sent directly to scan the spatial structure on site, and even the reflection angle of the cashier was calculated. So, manufacturers who can really customize will dare to accept "abnormal demand".

FAQ Quick Questions:
Q: Will the entire screen be scrapped if the control card is broken?
A: Choose a design with hot-swap backup card slot, and the screen runs as usual when changing the card

Q: How to judge the screen lifespan?
A: Look at the heat dissipation structure of the power module, and touch the back temperature of the prototype - don't buy it if it is hot

Q: What’s special about export products?
A: The real export goods after the maritime vibration test is the one. There must be a moisture-proof nitrogen pack in the packaging box.

The editor finally said: Buying an LED display is like finding a marriage partner. You can’t just look at the appearance (display effect), but you have to look at the family’s financial strength (factory strength) and sense of responsibility (after-sales service). Those whose quotes are outrageously low are 80% tampered with the components. Remember, a good screen can speak by itself - it is true that you will not fade for three years and do not stutter for five years. Next time I see the salesman who is so hilarious, I asked him to show the real-time monitoring screen in the workshop. It is a mule or a horse, you can tell at a glance!

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