A friend who opened a milk tea chain store complained to me two days ago: "I bought a transparent screen for 80,000 yuan, and I found that the picture was like a layer of plastic wrap when I installed it. Is this money a waste?" This is really not uncommon - now people sell LED transparent screens all over the street, but which channels are formal and reliable? Today we will break up and chat.

(Knock on the blackboard) First draw the key points:​The transparent screens in formal channels must meet three hard indicators - certified, traceable, and after-sales service​. Just like when you buy milk powder, you will look at the production date, and you must learn to check your "ID card" when choosing a display screen.

​​The first level: Understand the manufacturer's details without breaking into the pitfalls​​

Some merchants on the market sell second-hand refurbished screens as new products, and this is like a parallel product in Huaqiangbei mobile phones. Teach you three tricks to verify your true self:

1. ​Check certification​: ISO9001 is the basic threshold, CE certification represents compliance with EU standards, and CCC is a domestic compulsory certification. Last year, a transparent screen purchased by a convenience store chain was fined 200,000 by the Municipal Supervision Bureau for lack of CCC certification.
2. ​​Depending on the production scale​​: For manufacturers with monthly production capacity less than 5,000 square meters, most of them are OEMs. The production lines of regular large factories must include professional equipment such as SMT patch machines and wave soldering. Just like cooking, you must have a pot. You can’t fry steak with a rice cooker, right?
3. ​Ask about the warranty terms​: Those who dare to promise a warranty of more than three years of the entire machine are truly reliable. Some small workshops say "lifelong maintenance". When you really need repairs, even the company will be cancelled and run away.

To give a real case: Last year, a shopping mall in Hangzhou installed an 86% transmissiveness window screen. When purchasing, the manufacturer specially asked the production line video - good guy, the fully automatic patch machine assembly line is like a science fiction movie. Only such a powerful person dared to take on large-scale projects.

​Level 2: Purchase Channel Red and Black List​

Now buying a transparent screen is like ordering takeaway, and you can place an order on any platform. But you have to know the depth of water from different channels:

(Touch your chin) Personal advice, first-time purchase of novice is preferred​​Manufacturer direct sales + e-commerce flagship store combination punch​​. For example, check the model parameters on the official website first, and then go to the flagship store to compare prices, which is the same as testing the car before negotiating the price.

​Level 3: Don’t be fooled by technical parameters​

Some salesmen blow P3.91-pitch screens into "ultra-high definition", which is as outrageous as saying 720P videos as 4K. Remember these key data:

• ​​Permeability ≥80%​: The so-called "transparent screen" below this number has the same actual effect as frosted glass
• ​​Brightness grading adjustment​: 800-1200cd/m² is enough for indoor use, 4000cd/m² must be jumped outdoors
• ​​Refresh rate ≥1920Hz​​: Otherwise, there will be water ripples during shooting, and the live broadcast will directly overturn the car
• ​IP65 protection level​: If you don’t have this certification for outdoor use, a heavy rain will allow you to perform the "water curtain cave" on the screen.

Last year, a brand store in Shanghai suffered a loss - the screen brightness of the purchased was only 2,000cd/m², and the promotional information could not be seen clearly in the sun during the day, so in the end, I had to disassemble and reinstall it.

​​The fourth level: After-sales service is the real chapter​

All serious manufacturers dare to write after-sales terms into the contract, such as:

• Respond to faults 24 hours a day
• Free five-year spare parts
• Lifetime software system upgrade
• Door inspection twice a year

On the other hand, those who play word games have the contract that says "lifelong maintenance". If you look closely, you will find that you have to pay for your own travel expenses + accessories fees, which is more expensive than buying a new screen. Just like the "lifetime card" in some gyms, it sounds like the beauty is actually a pitfall.

​Personal experience of blood and tears​

I have seen too many magical operations over the years I entered the industry: some sell engineering tail products as new products, some use indoor screens as outdoor screens, and even use the special effects video of the movie "Iron Man" as a real-life shooting effect. After all, remember three sentences when choosing a regular channel:

1. ​​Retrieve the authentication before transferring​
2. ​​See the factory before placing an order​​
3. ​Sign the contract and then build it​

Finally, let me tell you a cold knowledge: the truly high-end transparent screen and even the driver chip are gold-plated, and you will definitely not see such details in second-hand goods. So, don’t be greedy for cheap buying this thing, as the money saved is not enough for later repairs.

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