Hey, let me tell you, a lot of supermarket owners have been asking about this recently - if they want to install an LED scrolling screen, where should they go? This thing is not about buying groceries. You can just find a stall and take it home. Don't worry, let's break it apart and crush it today to talk about it thoroughly!

1. Online purchasing: door-to-door delivery at the click of a mouse?

Don’t underestimate the power of online shopping today. I saw some data two days ago: the online LED equipment transaction volume increased by nearly 40% in 2023! Mainly these three areas are reliable:

1. ​​E-commerce self-operated store​ ​: For example, the flagship store of Dongdongmao, which provides no-reason returns and exchanges within seven days, is very worry-free.
2. ​​Industry vertical platform​ ​: A website specializing in optoelectronic equipment, which can give you 3D renderings
3. ​​Government Tendering Network​ ​: Some units have eliminated second-hand screens, but the price is only 30% off with excellent performance.

However, there is a pitfall here that I’d like to remind you: Last year, a convenience store owner named Zhang bought a “factory-direct” screen online, but the brightness was only half of the nominal value! Later, I tested it with professional instruments and found that the chips were all refurbished. So,​ ​Remember to ask for a third-party quality inspection report when buying online​ ​, don’t just look at the page and get hyped.

2. Offline channels: Seeing is believing before you can rest assured?

If you can’t believe what’s online, we still have a real solution. I know a wholesaler named Mr. Li, and all 20 screens in his supermarket chain come from this:

• ​​Professional market​ ​: Places like Shenzhen Huaqiangbei and Guangzhou Optics Valley can test machines on site
• ​​Factory direct sales​ ​: Go directly to the factory workshop and see the goods coming off the production line with your own eyes
• ​​Scanning goods at exhibitions​ ​: At the LED Exhibition in Guangzhou and the Advertising Exhibition in Shanghai, sample machines are often found missing.

But there’s a trick – you have to know how to bargain! Last month, I helped a friend negotiate prices. One company quoted 3,800 per square meter for the same P4 screen, while another asked for 5,800. Later I learned that the difference lies in the power module and after-sales period. ​ ​Remember the formula: three questions and three looks​ ​(Ask about chip brand, warranty period, installation service； Look at test reports, project cases, and production qualifications)

3. Purchasing skills: How to choose the right one or not?

To be honest, buying this thing is much harder than picking out a watermelon. Teach you some practical tips:

1. ​​Don’t be too bright​ ​: 800-1200cd/m² is enough for indoor use, but it is too bright, consumes electricity and is dazzling.
2. ​​The refresh rate must meet the standard​ ​: At least 1920Hz and above, otherwise the photos will be full of water ripples
3. ​​The level of protection depends on the occasion​ ​: The fresh food area must choose IP65 waterproof, and the dry goods area IP43 is enough.

Guess what? There is a sister Wang who runs a community supermarket. She bought a second-hand screen and saved tens of thousands of yuan. As a result, she spent an extra two thousand yuan on her monthly electricity bill! Later, I replaced it with a screen with smart dimming, and my electricity bill was cut in half. So​ ​Don’t just think it’s cheap, consider the full life cycle cost.​​。

4. Installation and maintenance: Is it done after purchase?

Here is a reminder for you! There was a supermarket in Chaoyang District last year where the screen was quite cheap, but the installation fee was twice the price of the equipment. Nowadays, all reliable channels include installation. There are a few points to note here:

• Measure the size of the door head in advance. Don’t find that the fire escape is blocked after installation.
• If you require remote control function, you can change promotional information on your mobile phone
• You must sign a warranty of more than three years, and core components such as chip drivers must be replaced.

I heard that there is a fresh food supermarket in Fengtai that is even better. After installing the screen, it also has an intelligent linkage system - if the temperature of the fresh food area exceeds the standard, the screen will automatically pop up a warning slogan. I can’t accept this idea!

Let me tell you, buying an LED scroll screen is like looking for a partner. It doesn’t just look pretty or cheap, the key is whether you can live a down-to-earth life. If you are unsure, remember this golden ratio: leave 20% of your equipment budget for after-sales service, 30% for smart functions, and the remaining 50% for hardware quality. Take the medicine according to this prescription and save yourself from taking the wrong path!

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