Have you ever seen a dazzling LED screen in dangerous environments such as gas stations and chemical plants? These guys are not ordinary display screens, they have to withstand the risk of explosion and are as stable as old dogs. Today we will talk about the tricks in this special field - especially how to find a reliable seller. After reading this article, novices can take at least three pitfalls.

1. Explosion-proof screens and ordinary screens are not relatives at all

Sprinkle cold water first: 90% of LED manufacturers on the market can't make real explosion-proof screens at all. This thing has to meet three hard indicators:

1. ​​Explosion-proof certification​​: It’s not just a certificate of conformity. It must pass the Ex certification of the National Explosion-proof Electrical Product Quality Supervision and Inspection Center.
2. ​​Structural strengthening​​: The box must be die-cast aluminum, and the joints must be plugged in explosion-proof sealant strips, and the screws must be coated with three layers of anti-rust film.
3. ​​Heat dissipation black technology​​: Have you ever seen anyone installing air conditioners on the screen? A manufacturer that supplies the Middle East oilfields was stuffed into the box with a micro liquid cooling system.

To give a real case: The fenced screen installed in a gymnasium in Tokyo last year looks like an ordinary LED on the surface, but in fact it has hidden secrets - each module has pressure sensing, and it will automatically lose power when encountering severe impacts. This system conducted 8,000 impact experiments alone.

2. Five hard-core indicators lock in reliable sellers

1. ​​Looking at the workshop is like looking at the kitchen​​
   A truly capable manufacturer dares to let you broadcast the production line live. For example, a large factory in Bao'an, Shenzhen has a robotic arm patch accuracy of 0.02mm, and the aging test area can simulate an extreme environment of minus 40℃ to 80℃. The product will be thrown in and baked for 72 hours without any problems.

2. ​​More certification certificates than marriage certificates​​
   Just reach out and you need these three things:

   • ISO9001 quality management system (ensure that every screen is biological)
   • CE certification (step to export to the EU)
   • Explosion-proof certificate (those who don’t have this are all hooligans)

3. ​​Live test​​
   Take a bottle of Erguotou to inspect (not for you to drink):

   • Splashing wine to test waterproof performance (IP65 is the bottom line)
   • Use a hammer to knock on the corner to see if it will burst
   • Play white screens for 12 consecutive hours to measure heat dissipation

4. ​​More service teams than sales​​
   The most fear of no one taking care of the explosion-proof screen after installing it. A company that does projects for Southeast Asian oil refineries has a technical team of 20 people in the local area and promises to be there in two hours - after all, if the screen in this kind of place is blind, it may be a death in minutes.

5. ​​The case must stand human flesh​​
   Don’t just look at the brochure, just ask for the project address. For example, in a business district in Seoul, there was no lamp bead after installing it for three years. The secret is to use military-grade driver chips. This thing is three times more expensive than ordinary chips, but it is indeed resistant to manufacturing.

3. The truth behind the price fog

There is a dark story here: the screen with explosion-proof certification can be five times the price difference! The key is to look at these details:

• ​​Lamp bead packaging process​​: COB package is more expensive than SMD but has doubled its explosion-proof performance
• ​​Box material​​: The price difference between aviation aluminum and ordinary aluminum alloy can reach 200 yuan/square meter
• ​​Intelligent control system​​: The screen with environment perception can automatically reduce power, and the electricity bill saved in five years is enough to buy half a set of new equipment

For example, the P4 outdoor explosion-proof screen commonly used in chemical factories, the counterfeit goods are priced at 2,000 yuan per square meter, and the regular army costs 5,000 yuan. But the former costs 8,000 yuan for two years, while the latter costs basically no need to worry about the ten-year warranty period - primary school students can calculate this account.

4. Guide to avoid pits: Take these routines once and once

1. ​​Boasting "Universal Explosion-proof""​​
   Explosion-proof grades are divided into three levels: IIA, IIB, and IIC. Coal mines must use the highest level of IIC. Buy the wrong grade and wait for the safety supervision department to invite tea.

2. ​​Promise "Never fade"​​
   There is nothing that does not decay! Regular manufacturers will tell you clearly: the brightness attenuation shall not exceed 15% within three years, and the color difference is ΔE<2.

3. ​​Accept urgent orders at low prices​​
   The explosion-proof screen has a minimum of 45 days from ordering to delivery. Those who say they can ship in seven days are probably using the explosion-proof paint layer of ordinary screens to fool people.

I'm talking about offending people

Buying a explosion-proof screen is like buying insurance - it is usually expensive, but it only takes the opportunity to know the value if something happens. Last year, a certain oil refinery bought a copycat for cheap purposes, but the screen short circuit caused an alarm, and the entire factory shut down for three days and lost tens of millions. In contrast, although customers who choose regular manufacturers spend 200,000 yuan more purchasing fees, they save 500,000 yuan in ten years of operation and maintenance, and avoid safety accidents. remember:​ ​In the field of explosion-proof, the money saved is risk reserve​​！

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