Hey, people keep asking me recently: "Where can I buy the large advertising screens that are all over the street?" "Today we will break it apart and talk about it. Even though these screens are on day and night, the doorway here is deeper than you think!

1. Don’t rush to spend money when buying a screen. Look at these three hard indicators first.

​​1. Is it bright enough to withstand the sun? ​ ​
Outdoor screens are most afraid of becoming "dumb" in the middle of the day. Professional-grade products must reach more than 5000cd/m², but don’t believe the numbers casually reported by merchants! Here’s a trick for testing: turn on a pure white screen at noon on a sunny day, and take a photo with your phone to see if there is any graying. A true anti-light screen can still see details clearly at this time.

​​2. Can you prevent heavy rain? ​ ​
Last year during the typhoon season, a newly installed screen in a business district suffered from water intrusion and short-circuited. The repair cost was more expensive than buying a new screen. ​ ​Check the IP65 protection level​ ​The bottom line is that the more sophisticated ones will install double-layer silicone strips at the seams. Let me teach you a simple way: before buying, ask the seller to take pictures of the internal structure of the box to see if the circuit board has a waterproof coating.

​​3. Will the screen become stuck in PPT? ​ ​
Screens with a refresh rate lower than 1920Hz will cause ripples when shooting videos. A friend bought a low refresh screen for cheap, but when traffic ads were played, the tires became square! Nowadays, high-end products can achieve 3840Hz, and the dynamic picture is like Dove chocolate-enjoy silky smoothness.

2. Teach you three bargaining tips to save 30% of your budget

​​The first tip: Choose the right purchasing time​​
March to May every year is the off-season for the industry, and manufacturers can offer discounts of 15% to 20% to offset sales. Don’t rush to place an order before National Day or Spring Festival, when the price of raw materials will increase.

​​The second trick: Modular design is king​​
It's like putting together Lego, replacing any broken piece. A certain chain brand used this solution to save RMB 470,000 in maintenance costs in three years. Focus on the box connection method. The magnetic structure is 3 times faster than screw-fixed installation.

​​The third trick: Cut down on service but not on quality​​
The installation and commissioning fees can be negotiated, but don’t save money on quality inspection. There is a lesson learned through blood and tears: A certain company spent 8,000 yuan on sampling inspection fees, but the color difference of the entire batch of screens exceeded the standard, and all of them were reworked in the end.

3. Procurement channels known only to experts

​​Offline channels:​​

• Direct procurement in the industrial belt: The Pearl River Delta is home to 70% of the country’s LED manufacturers. If you go directly to the factory to inspect the goods, you can get a 20% discount on the price.
• Professional exhibitions: Industry events such as Guangya Exhibition where you can touch the latest technology samples
• Engineering contractor packaging service: suitable for chain stores, bulk purchasing saves logistics costs

​​Online trap warning:​​

• Beware of "selling dog meat to others": A certain online store page displays a P3 screen, but what is sent is a P4
• Please read the logistics terms carefully: be sure to indicate "delivery to the installation site", otherwise it may only be delivered to the logistics point.
• The acceptance standards are written in black and white: the color difference range and brightness attenuation value must be written into the contract

4. Heartfelt words from practitioners of ten years

Nowadays, some manufacturers are boasting about "smart screens". In fact, there are two core points:​ ​Low brightness and high gray technology and full-cycle service​ ​. The former ensures that the display can still be clearly displayed at three o'clock in the morning without dazzling the eyes, and the latter means that there is someone to take care of it from the project design to the module replacement five years later.

There is a detail that many people overlook - the power supply system. The screen in a certain Internet celebrity block kept flickering, and it was finally found that the cross-sectional area of ​​the wire was insufficient. Professional manufacturers will provide power supply distance calculation tables, accurate to meters.

Finally, let me tell you the truth: Don’t be fooled by the gimmick of “imported chips”! Domestic packaging technology has long been on par with foreign countries. The curved screen of a landmark project in Southeast Asia has been running without failure for three years and uses all domestic components. remember,​ ​A stable quality control system is more important than a single source of parts​​。

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