Do you believe it or not? Now searching for "LED display single-chip" online, most of the links that pop up are pitfalls! Last week, my cousin opened a studio and bought a batch of single films with cheap pictures, but it turned out to be filled with color aberration mosaics. Today I will take you to explore how deep the water in this industry is!

Three major minefields for online purchase

Let’s talk about the e-commerce platform that novices love to go to the most. This is a Shura market that sells real and fake:

1. ​​Don't worry about the price that is so low​ ​: Is P2.5 specification single piece sold for 8 yuan? This price is not even enough for chips!
2. ​​The metaphysics of "factory direct operation"​ ​: Click to open a store business license, eight of them are registered in residential buildings
3. ​​All the comments are positive and vigilant​ ​: An engineer has done a test. The actual pixel density of samples sent by merchants on a certain platform is 30% less than that of the label.

Last year, there was a real case - an event company greedy for cheap purchases of 200 pieces online. After installing, it was found that one-third of the modules had two levels of brightness difference. In the end, the entire project was reworked for 50,000 yuan. If you want me to tell me, this advantage is even more unfair than Dou E!

The Crystal Palace Rules for Offline Stores

If you want to be reliable, you have to look offline, but there are many tricks here:

• ​​Shenzhen Huaqiangbei Electronics Market​ ​: There is a real big shot hidden at the corner of the second floor. Remember to ask directly, "Do you have any factory inspection report brought?"
• ​​Professional lighting and sound city​ ​: Find stores with the brand "National High-tech Enterprise" on-site, and such merchants can usually demonstrate grayscale gradient on-site
• ​​Don't believe in packing tickets​ ​: Those who say "100% bad points" when they open their mouths are playing text games - what they say may be that there is no bad points when they unbox them

Last month, I accompanied my friend to purchase and saw my boss teach customers how to see the chip packaging process with a microscope. To be honest, there are many more renderings of stores that can allow you to inspect goods with a magnifying glass than those of online stores that have excessive PS!

Hidden copy of the old bird in the industry

Real good goods are actually hidden upstream of the supply chain:

1. ​​Participate in industry exhibitions​ ​: Events like Guangzhou International LED Exhibition, manufacturers often bring the latest samples to trade directly
2. ​​Find a project contractor to purchase​ ​: Many large manufacturers do not sell to retail investors, but they can get channel prices through engineering providers
3. ​​Keep a close eye on customs auction channels​ ​: The quality of some foreign trade orders is higher than that of the market, and the price can be cut to 60% off.

I met a boss of a stage design company and specializes in customs auctions. Last year, a batch of P3 single-pieces exported to Japan were sold, with a waterproof level of IP65, but the unit price was 20% cheaper than domestic products of the same level. This operation is a complete dimensionality reduction attack!

Three golden tricks to distinguish authenticity

Teach you a few lost inspection tips:
✅ ​​Nail scraping coating​ ​: It is difficult to scratch the surface protective layer with a utility knife, and the counterfeit nails will lose powder when you scratch it
✅ ​​Clicking on your phone​ ​: Turn on the camera and aim at the screen. There will be no scanning line at the genuine 1920Hz refresh rate.
✅ ​​Check the identity code​ ​: Each piece of regular manufacturers has an independent traceability code. You can find out if it is a set card by checking it on the official website.

Once when I went to the warehouse to inspect the goods, the manufacturer's representative directly moved out the spectrometer's color gamut coverage. Data shows that genuine products can reach 110% NTSC, while counterfeit goods are less than 85% - this gap is not obvious to the naked eye, but it immediately becomes a video wall!

Editor's opinion

To be honest, buying a single LED display is like finding a partner - greed for cheapness and suffering losses, and only after you can you identify your strength will last. Remember to ask more questions for the next purchase "Can you provide a three-year warranty?" The one who dares to guarantee the breasts is the real boss. After all, it is not a one-time deal when installed. After-sales technical support is much more important than saving the few dollars!

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