What should I do if the LED large screen keeps having problems during conference activities in Diqing? Either it's not bright enough to see the PPT clearly, or the reflection on the screen makes me dizzy. It was difficult to transfer the equipment from Kunming, and the transportation fee was more expensive than the rent. Today we’ll talk about it, talk about it,​ ​Three survival rules for buying conference LED screens in plateau areas​​。

Let's start with a real case - last year, a certain unit held its annual meeting in Shangri-La. Due to the large temperature difference at high altitude, the temporarily rented LED screen directly fogged and frosted on the screen, so the entire event had to be replaced with a projector. Later inspection found that the equipment was not manufactured at all.​ ​Low temperature anti-condensation treatment​ ​. So,​ ​When buying a screen in Plateau, check the hardware adaptability first.​ ​, you have to choose one with an automatic dehumidification system, just like the ventilation design of our Tibetan houses.

The first level: the parameters must be "hard enough""

Don't look at the flashy business brochures, but grasp these core indicators to avoid getting into trouble:

• ​​Refresh rate≥3840Hz​ ​: There will be no smearing when taking close-up shots of leaders’ speeches. This is also emphasized in the purchasing standards of the Diqing Cultural Center mentioned on web page 1.
• ​​Smart brightness adjustment​ ​: It can reach 5000cd/m² when the sunshine is strong on the plateau, and automatically drops to 800cd/m² on cloudy and rainy days. It is smarter than yak hair.
• ​​Color gamut≥125%NTSC​ ​: When displaying thangka patterns, the transition colors of gold foil texture and mineral pigments will not be blurred into one piece.

Here I will teach you a simple method - bring a 4K test film source for on-site testing. Focus on the transition between the red prayer flags and the blue sky and white clouds. If there are layers of color blocks, just pass. The "low brightness and high gray technology" specially requested by the Diqing Cultural Center during the bidding process is to prevent color distortion when the screen is dimmed. This coincides with the anti-glare requirement for conference rooms mentioned on web page 4.

The second level: the service must be "wild enough""

In areas like Diqing with inconvenient transportation, after-sales response speed is the lifeline. Last year, a screen purchased by an employer malfunctioned. By the time the Kunming manufacturer sent someone, the forum had been closed for three days. Reliable manufacturers must do:

• ​​Localized spare parts library​ ​: Keep at least two sets of commonly used modules and power supplies in Shangri-La
• ​​Plateau Special Training Engineer​ ​: To know how to work with electricity at an altitude of 4,000 meters, you also need to be able to ride a horse and go to the countryside for maintenance.
• ​​7x24 hours response​ ​: Same as the requirements of Diqing Cultural Center mentioned on webpage 1, 5 minutes for response and 30 minutes for arrival.

Here is a little tidbit - the circuit voltage in plateau areas is unstable, so you have to choose a​ ​Wide voltage design​ ​Power module (200-240VAC). Just like our butter teapot needs to be equipped with a special pressure valve for plateaus.

The third level: the qualifications must be "hard enough""

Don't believe those recommendations from "connected users", look for these hard-core certifications:

• ​​IP65 protection level​ ​: To cope with the rain and snow in Diqing, it is consistent with the outdoor waterproofing requirements emphasized in web page 4
• ​​Electromagnetic compatibility certification​ ​: Prevent interference with the electronic prayer wheels in the temple. This point was also highlighted in the bidding documents of the Diqing Cultural Center.
• ​​UL94V-0 flame retardant​ ​: The thin oxygen on the plateau requires fire prevention, and the materials must meet international flame retardant standards.

Special reminder - be sure to check before signing the contract​ ​Original factory warranty letter​ ​. Last year, a unit suffered a huge loss. After the agent ran away, the manufacturer refused to acknowledge the debt, and the hundreds of thousands of screens became decorations. The procurement announcement on web page 1 clearly requires that the winning bidder must provide the original manufacturer's warranty. This detail must not be omitted.

Question and answer time

​​Q: Why are the screen prices with the same parameters different by tens of thousands? ​ ​
A: The trick here lies in the lamp bead packaging process. For example, use​ ​Common cathode drive technology​ ​Although the screen is more expensive, it saves 30% of electricity. It can save a fortune on electricity in three years. Just like when we buy matsutake, it depends on whether it is packed in a wooden box or a foam box.

​​Q: How to judge whether the manufacturer can really serve in Diqing? ​ ​
A: Let him come up with project cases in Deqin or Weixi. For manufacturers that have actually implemented it, the contract will state that "it includes Baima Snow Mountain Tunnel transportation insurance." Such details cannot be compiled.

​​Q: Is it more reliable to buy online or offline? ​ ​
A: The key is to see if there is any​ ​Check the machine upon arrival before payment​ ​terms. It is recommended to follow the approach of the Diqing Cultural Center in web page 1 and require full payment only after passing the installation acceptance. Don't be fooled by the "50% advance payment" routine.

Finally, to be honest, buying an LED screen in Diqing is like looking for a mountaineering guide - you can't just look at the quotation, you have to look at who can take you to the top in a snowstorm. Next time you make a purchase, remember to ask these three questions: How long does it take to start at plateau low temperatures? How to protect yourself from lightning strikes at the foot of snow-capped mountains? Can the Tibetan-style UI interface be customized? Only after passing these three levels can your LED screen stand firmly on the snowy plateau.

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