Are you bosses worried about choosing LED screens? Last month, I met a catering customer who bought a second-hand screen at a cheap price, but on the opening day, the subtitles were stuck in PPT! Today I will teach you three tips to ensure you buy good products that are durable and worry-free.

Hidden traps in quotations

​​Pit 1: Material cost as a blind eye​​

• The cost of lamp beads accounts for 55% of the entire screen (imported cores are three times more expensive than domestic ones)
• The price difference of power module is up to 200 yuan/block
• The control system cuts corners and saves 30% of costs

​​The second pitfall: the installation fee calculation is tricky​​
Real case:

• Please write the installation fee of 200 yuan/㎡ in the quotation.
• The actual surcharge for working at heights is 50%
• The three-year maintenance contract has a hidden 10% annual fee.

​​The third pit: the area hardest hit by false parameters​​
Laboratory measured data:

• The nominal life span of 100,000 hours actually decreases by 50%
• Claimed to be IP65 protected against short circuit when exposed to rain
• The 1920Hz refresh rate is actually only 800Hz

Last year, I helped a chain convenience store select screens and conducted on-site testing with a light meter. I found that the brightness uniformity of the three suppliers differed by 23%! If this is installed in the store, the product will change color when photographed.

Five details you must see during factory inspection

​​First look: workshop dust removal equipment​​
Good factory standard configuration:

• Thousand-level dust-free workshop (no floating dust visible to the naked eye)
• Automated placement machine (error <0.01mm)
• Aging test starts at 72 hours

​​Second touch: sample seam treatment​​
Eligibility criteria:

• Jointing seam ≤0.5mm (coins cannot stand up)
• No burrs on the corners (the stockings will not snag if scratched)
• Module flatness ±0.1mm

​​Question 3: Failure emergency plan​​
Key points to confirm:

• Spare module inventory (≥10% of total quantity)
• Local technical team response time (<4 hours)
• Backup power switching speed (≤0.3 seconds)

The most incredible method of inspection I have ever seen: asking the supplier to drive the screen-mounted truck on a 20-kilometer washboard road! As a result, two of the three companies had module displacement, which would cause trouble if installed in a place with high vibration.

Exclusive purchasing tips

Industry data shows:

• Screen with intelligent brightness adjustment saves 45% power
• Modular design improves maintenance efficiency by 60%
• True IP65 protection can reduce failure rate by 70%

To put it bluntly, buying an LED screen is like looking for a marriage partner - the more detailed the pre-marriage check, the less trouble you will have after marriage. remember​ ​You need to watch the dynamic demonstration, check three years of data, and sign the compensation terms.​ ​, follow these three steps to buy a good and durable screen!

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