​​When watching short videos, I always see the cool naked-eye 3D large screen. I want to install an LED display for my store but I don’t know where to start?​Last year's industry survey showed that​38% of novice buyers delay or overspend due to choosing the wrong supplier​​. Today we will disassemble the tricks of LED display procurement and teach you step by step to avoid those pitfalls.

Three major minefields for channel selection

Newbie who are new to this industry are most likely to fall into the procurement channel. Last year, a decoration company purchased P4 screens for the mall. She found an unqualified workshop for cheap photos, but it appeared three months after the decoration.23% lamp bead attenuation​. Remember these key points:

1. ​​Don’t look at the surface online price comparison​​: The P3 screen with a price of 5,000 yuan/㎡ of Taobao may use a refurbished driver IC
2. ​​Exhibition samples ≠ mass production​​: The 4K effect seen at the industry exhibition may shrink to 2K
3. ​​Local dealers have many tricks​​: Some agents will sell project finals as new products

Here is a trick:​Require suppliers to provide factory inspection reports for the past three months​​, focus on brightness uniformity and color temperature deviation values. The data fluctuations of regular manufacturers will not exceed ±5%, while the workshop goods can be 30%.

Hidden information behind the parameters

When you see the product manual that says "P2.5 full color screen", don't think that's all. Last year, I suffered a loss in the stage screen I chose for my friend - both P2.5,​Refresh rates 1920Hz and 3840Hz​The actual effect is two streets worse:

Especially​Intelligent brightness adjustment​Some manufacturers use PWM dimming for this function by cutting corners, and the strobe can reach 250Hz, which will definitely be dizzy when you see it for a long time. Be aware of DC dimming or hybrid dimming technology.

The life and death line of service guarantee

Last month I encountered a tragic case: an interactive floor tiled screen installed in a gym was blacked out for three hours on the day of its opening, with a loss of more than 50,000 yuan. Later found out that​Control system incompatible​, the supplier turned the blame to the decoration team. These service details must be kept in mind:

• ​​Program design stage​To obtain the on-site environmental parameters (temperature and humidity/power supply stability/person flow)
• ​​During installation and debugging​A 72-hour aging test must be performed to see if there is any fault in the color block.
• ​After-sales terms​Don’t just look at the warranty period, but make sure the response time (such as 4-hour remote support)

The key point is:​Require suppliers to provide acceptance reports for similar projects​​. The curved advertising screen project launched in Singapore last year was conducted more than 20 times in wind resistance testing alone, and this kind of case is worth referring to.

Three Questions on Procurement Soul

​​Q: How to choose the most cost-effective if you have a limited budget?​​
Phase procurement! Install the core display area first and then expand it later. For example, you can first make a 5㎡ main screen at the door of the shop, leave the interface and then add two side secondary screens.

​​Q: How to judge the manufacturer’s true strength?​​
Three surprise checks:

1. Check whether there is an automated patch machine in the workshop video
2. Check whether the brand batch of lamp beads in raw material warehouse is unified
3. Are the quality inspection instruments used seriously?

​​Q: What should I pay attention to when doing overseas projects?​​
Voltage compatibility is key! Japan needs to use 100V AC power, while South Korea has 220V/60Hz, and the plug standard is also different. Last year, a project in Seoul burned the control card due to mismatch in the plug.

After all, buying LED screens is not a one-time deal. Have seen too many projects because​Ignore the heat dissipation design​or​Unreasonable power supply configuration​​The car was overturned. Remember the truth:​Good suppliers dare to let you fly over to inspect the factory at any time​​, those who make excuses to shirk their feelings are probably ghosts. Before signing the contract next time, remember to add the "inspection of goods at the factory" clause - this is a trick that can help you avoid 80% of the pitfalls.

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