Want to buy a large LED electronic screen but are afraid of being cheated? Don’t panic! I have seen too many bosses spend money in vain, and today I will spread the tricks that the industry will not be explicitly stated. After reading this article, I guarantee that you are better at understanding than 80% of the purchasing veterans!

1.Where is the black hole for the fee?​​

Sprinkle cold water first - the price difference of LED screens of the same size may be more than twice! The moisture here is mainly hidden in three places:

1. ​Pixel density trap​：
   Both P3 and P10 look at screens, with an actual price difference of 3-5 times
   P4 is enough for shopping malls (about 80,000 lamp beads per square meter)
   Don't be fooled into military-grade P1.5 (420,000 per square meter)

2. ​​Certification certificate blind spots​​：
   Products from regular manufacturers must have CCC+CE dual certification
   I have seen a customer save 30,000 yuan to buy an unlicensed screen, but the customs lost 200,000 yuan to deduct goods.

3. ​​Hide maintenance costs​：
   The annual maintenance fee for inferior screens is as high as 15% of the purchase price
   The maintenance cost of Haoping in five years shall not exceed 5%

II.​Supply filtering four-step method​

​​Remember this mantra: "Three views, two touches and one question"​

1. ​​Look at the production base​​：
   If the monthly production capacity is less than 5,000 square meters, be careful to choose (the production capacity can be done without cutting corners)
   The workshop must have a fully automatic patch machine + aging test room

2. ​​Touch the sample details​：
   Box joints ≤0.1mm (A4 paper cannot be inserted into the A4 paper to be considered qualified)
   After lighting up, look closer - the screen is considered good without color spots

3. ​​Ask technical parameters​：
   The refresh rate must be ≥1920Hz (the mobile phone screen will not flash and ripple)
   The brightness adjustment range must cover 800-5000nit (for indoor and outdoor common)

4. ​​Investigate project cases​：
   To install live videos in the last 3 months
   Focus on whether the cable is neatly positioned (the construction level is hidden here)

III.​Flow diagram of pit avoidance installation​

From placing an order to lighting up, following this process is correct:

1. ​​Program design stage (3-5 days)​

   • Measure the installation position size (don't believe in visual inspection!)
   • Provide site power parameters (voltage unstable must be added to the voltage regulator)
   • Confirm the content playback form (interactive functions need to be said in advance)

2. ​​Production and transportation phase (7-15 days)​​

   • Each module is required to be independently packaged (shock-proof foam thickness ≥3cm)
   • Vacuum moisture-proof treatment is required for sea transportation (humidity exceeds 60% will damage the IC)

3. ​​On-site construction phase (72-hour critical period)​​

   • The first day of steel structure (the error exceeds 2mm will be reworked)
   • Install the module the next day (light up while installing)
   • Debug the system on the third day (grayscale correction must be repeated 3 times)

IV.​Hidden test points for after-sales service​​

Don't wait until the screen breaks before regretting it! These terms of service must be written into the contract:

• ​​Response time​: The plan is released within 2 hours after the failure is declared
• ​​Spare parts inventory​: Commonly damaged parts must have 5% redundant inventory
• ​Remote Diagnosis​: Support AR glasses to guide repair
• ​​Software Upgrade​: Provide system update for at least 5 years

Last year, a shopping mall owner had a cheap picture, but the screen he bought had no remote maintenance function. As a result, water was in the screen during heavy rains. When the engineer arrived, the control card was soaked, and the loss was directly 180,000 yuan. Is this money safe from wrong?

Exclusive data reveal

Industry research shows that when purchasing, spend 10% more budget to select high-quality suppliers, and the comprehensive cost in five years is 35%. Especially for screen suppliers exported to Japan and South Korea, the average product failure rate is 62% lower than the industry standard - the quality inspection standard, even the screw torque value must be detected with a CNC wrench!

If you ask me, buying a large screen is like finding a partner - don’t just look at the face (appearance), you have to find out your financial situation (technical strength). I have seen too many customers be tricked by the gimmick of "low price and high configuration", and the repair fee is higher than the purchase price in the end. Remember, the lamp beads of good screens can be used for 80,000 hours without decay, and the power modules of poor screens may not last for the rainy season!

Next time, I saw an agent who asked him a very low price and asked him directly if he dared to sign a five-year warranty agreement? He was so scared that he deleted WeChat overnight!

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