Alas, two days ago, I passed by the commercial street and saw the naked 3D screen on the exterior wall of the mall suddenly blackened halfway. The repairman crawled on the hanging basket and scratched his head in a hurry. This incident suddenly reminded me that the streets are full of large LED screens, but if you really want to build a large screen store, where should you find someone to do it? Just like a novice who wants to learn "how to quickly increase fans with short videos", they have to find a reliable platform first, right?

/// A big introduction to customization channels///
​​First point: Finding a manufacturer is ten times more reliable than finding a middleman​​. There are only three common channels:

1. Brand direct store (suitable for large projects that require invoices)
2. Local engineer (fast response but possible subcontracting)
3. Source factory (high cost performance but must be inspected)

Last year, a shopping mall in Tokyo suffered a misstep when changing the screen. I found a second dealer and found a second dealer, but the screen body and the control card were incompatible. Later, I contacted the factory directly and found that the same budget could make 20% more display area. Here is a cold knowledge: a factory with a monthly production capacity of over 10,000 square meters has 38 levels of quality inspection alone.

/// Technical Parameters Pit Prevention Guide ///
Don’t be dizzy by sales, remember these three core indicators:

• ​​Refresh rate ≥1920Hz​​ (Screen switch does not drag the shadow)
• ​​Intelligent brightness adjustment​(Don't be more than 1200nit indoors and be careful to be blinded)
• ​​Protection level IP65 starts​(I don’t have to worry about turning into a water curtain cave on rainy days)

To give a real case: a transparent window screen in a department store in Seoul, I chose a low-end version when the picture was cheap, but as a result, the sunlight at noon turned into a mirror. Later, it was upgraded to a model with a transmittance of 86%, and the electricity bill was reduced by 15%.

/// Full analysis of customization process///
From drawings to bright screens, walk in five steps:

1. On-site survey (layer height, load bearing, power point)
2. Solution design (like building blocks)
3. Pre-installed in the factory (vibration tests and aging for 72 hours)
4. On-site lifting (professional team with hydraulic lifting platform)
5. Joint inspection and acceptance (color calibration must be adjusted three times before it can be accurate)

A master told me that now a laser positioner is required to install high-end screens, and the error must be controlled within 2mm. Last year, in Singapore's arc screen project, three total stations were used to adjust the arc alone.

/// Price Mist Cracking Technique///
Don't rush to compare prices, first find out the tricks in the quotation:

1. Box material (Aviation aluminum magnesium zinc alloy three times more expensive than iron sheet)
2. Power brand (Miscellaneous power supply will be broken for three years)
3. Control system (8K content that can’t be moved by counterfeit cassette)
4. Installation fee (high-altitude operations must account for 20% of the budget)

I heard that the spherical screen of a science and technology museum in Shenzhen had a three-fold difference in price at the beginning, but the mid-range plan I chose was used for five years. Remember here: if the price difference per square meter exceeds 2,000 yuan, it will definitely cut corners in key components.

Next time you see a new LED screen in the street shop, you may wish to pay attention to the location of the power box. If you find that the heat dissipation hole is designed in honeycomb shape and the control cabinet has intelligent temperature control, it is probably a 1920Hz high-brush solution. When you really can't make up your mind, it's safest to directly find a manufacturer with Japanese JIS certification - after all, the technology precipitation of companies that can sell their products to Akihabara is not something that can be blown out.

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