​​Ouch hey! If you want to create an LED advertising screen in Yuanyang, are you always struggling with who to buy it? ​ ​
Last month, Lao Wang opened a restaurant and bought a second-hand screen for cheap pictures. As a result, the screen was spent in less than two weeks. The repair fee was more expensive than buying a new screen! Today, let’s talk about how to buy reliable LED screens in Yuanyang, so you will be clear after watching them!

1. Physical store vs. Online shopping: Which one is more reliable?

​​Let me tell you a big truth: Now there are people on the streets of Yuanyang that are under the banner of "direct sales by manufacturers", and six out of ten are second-deao dealers! ​ ​

1. ​​Offline physical store advantages​​：

   • Can watch the playback effect on the spot (remember to let the boss play 4K videos to try)
   • The thickness of the heat sink (the thickness of the outdoor screen aluminum is at least 2mm)
   • Check the certification labels on the spot (CCC and CE marks must be printed on the nameplate, and the stickers may be fake)

2. ​​Online shopping guide​​：

   • Shops with "Inspection Treasure" are preferred (return if there are quality problems within 48 hours of arrival)
   • See if there is any [real video on the startup] on the product details page (don’t believe in the renderings! )
   • Ask for the control card model (mainstream brands have better control system compatibility)

​​Real cases​​: Last year, the batch of P4 screens in the National Culture Plaza did not check the IP protection level during procurement, and the water inlet was short circuited during the rainy season, and finally all reworked and reinstalled, with a loss of more than 200,000 yuan!

2. The tricks in the parameters: These numbers must be kept to death!

​​The "high-definition screen" mentioned by the merchant may be a text game, which teaches you three tricks to break the situation:​​

1. ​​Don't be fooled by the points spacing​​：

   • The advertising screen on the pedestrian street is at least P6 or below (P6 = pixel pitch 6mm)
   • Calculation formula: Optimal viewing distance (meters) = point spacing (mm) × 1000÷8
   • For example, the P4 screen is suitable for 5 meters of appearance, and it is a waste to put it as a menu screen in the store.

2. ​​The higher the brightness, the better​​：

   Scene	Recommended brightness (cd/m²)	Tips
   Indoor windows	800-1200	Use your mobile phone to take a screen to measure reflection while the light is turned on
   Outdoor roadside	4000-5000	You must be able to see the QR code clearly in the afternoon sun
   Exterior walls of tall buildings	5500-7500	With automatic dimming function, more power saving

3. ​​Refresh rate needs to be measured​​：
   Use slow motion mode of the phone (240 frames/second) to shoot the screen, and the black bar appears, which means that the refresh rate is less than 1920Hz
   ​​Remember​​: The screen shots with low refresh rate are full of ripple, and it’s a shame to post on TikTok!

3. After-sales guarantee: Don’t wait until it breaks down before regretting it!

​​You must ask these words when buying a screen:​​

1. "When does the warranty period count? "(Regular manufacturers start from the installation acceptance date)
2. "Is there a charge for upgrading control software? "(Free upgrade within three years is the industry bottom line)
3. "Is the water inlet caused by heavy rain? "(IP65 protection level must include water damage insurance)

​​Lessons of blood and tears​​: There is a screen bought by a hotel in the new district. The contract says "three-year warranty". As a result, the motherboard broke down the second year. The merchant said that "the warranty does not include electronic components", and finally argued for three months!

4. Hidden benefits: You can save thousands of dollars by buying this way!

1. ​​Bargaining timing​​：

   • Negotiate prices in the last three days of the end of the month (sales are prone to relaxation in performance)
   • Bulk procurement requires commissioning training (market price 2000/time)
   • Designated logistics companies can save 15% freight

2. ​​Government subsidies​​：
   Yuanyang will provide digital transformation subsidies for cultural and tourism projects this year, and the maximum supplement of LED screens will be 30%!
   Need to prepare:

   • Project design plan (find a qualified company to give pictures)
   • Product testing report (with CNAS certification)
   • Equipment installation registration form

Personal opinion time

After working in this industry for more than ten years, I have seen too many cases of losing money by greed for cheap things. I sincerely suggest everyone:

1. Don't touch "special price screens" below the market price (either refurbished or cut corners)
2. When signing the contract, the clear and zero clause must be written (such as "there are more than 3 failures during the warranty period and the replacement is free of charge")
3. Priority is given to merchants with 24-hour response services (the real ability is to be able to come to the door with a black screen in the middle of the night for 2 hours)

Finally, let’s say the heartfelt words: buying an LED screen is like finding a partner. You can’t just look at your face (appearance), but also your family’s financial situation (technical parameters) and sense of responsibility (after-sales service). Follow these few choices and ensure that you can buy a satisfactory screen in Yuanyang!

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