Are newcomers who have just entered the industry often dizzy by quotations for various LED electronic screens? Obviously, looking at the screen with similar parameters, some of the quotation differences are several times. Today we will break it apart and talk about where to find this LED electronic screen to be reliable!

1. Comparison of the three mainstream procurement channels

​​1. Online B2B platform​​

• ​​Advantages​​: Platforms like Alibaba gather nearly 10,000 suppliers in Shenzhen, Guangzhou and other places, and have updated more than 5,000 product information in a single day. Supports accurate filtering by point spacing (P2-P10) and protection level (IP54/IP65)
• ​​risk​​: The "Manufacturer Direct Sales" displayed on the web page may be mixed with intermediaries. It is recommended to check the "Year of Establishment" and "Factory Real Shooting" columns in the company's qualifications.

​​2. Direct procurement of industry exhibitions​​

• The Guangzhou ISLE exhibition in March and the Shanghai LED CHINA exhibition in September can compare the physical effects of 30+ brands on site. Focus on observing the grayscale transition and color consistency of the screen, which directly determine the texture of the picture
• Tips: bring a USB disk storage test video (recommended 4K fireworks show clips), watch live to see if there are any mosaics

​​3. Government procurement directory​​

• The winning bidders of smart city projects usually have dual certification (ISO9001+CCC). This type of enterprise has a monthly production capacity of more than 10,000 square meters, which is suitable for large-scale engineering projects.
• Pay attention to checking the experience of similar projects in corporate cases, especially the stadium screens to confirm shock-proof indicators

2. Four keys to avoid purchasing traps

​​Pit point 1: Parameter virtual mark​​

• The brightness scale 4000cd/m² may actually be less than 3000, and the supplier is required to provide a third-party inspection report.
• Test tips: Use your phone to take a photo mode to align the screen and observe whether there is a clear scan line

​​Pit point 2: After-sales vacuum​​

• Manufacturers that provide 72-hour on-site service are preferred, especially for export projects, overseas maintenance outlets must be confirmed.
• Before signing the contract, ask: Is the control card open to the agreement? Is it compatible with third-party playback devices?

​​Pit point 3: Material shrinkage​​

• The box material is accurate to aluminum-magnesium alloy (thickness ≥1.5mm), beware of galvanized iron sheet as stainless steel
• During on-site inspection, the frames can be tested with magnets. What can be adsorbed is definitely not aviation aluminum.

​​Point 4: Software Bundle​​

• Some manufacturers forcefully use customized playback systems, and the later upgrade costs are high. Requires open HDMI/SDI interface protocol

3. Screening skills that experts use

​​1. Three-step verification of corporate strength​​
① Check the production base: video connection is required to view the SMT patch workshop, and the automated production line should have a wave soldering machine and AOI detector
② Technical inspection team: R&D personnel should account for more than 15%, focusing on the type of patent (utilitarian models are not as good as invention patents)
③ Ask for delivery case: It is required to provide videos of the same type of project within 3 months to observe whether there are any colored blocks falling off

​​2. Cost control secrets​​

• When purchasing in bulk, select the standard box size (such as 500x500mm), and the non-standard customization fee may account for 20% of the quotation.
• Southeast Asian projects can adopt the "one-day tour of bonded areas" model, saving 17% VAT

​​3. Negotiational Spoken Example​​

• "Our project needs to be paid in three batches. Can we accept 30% advance payment? "
• "The price of products in the same parameters of the next door factory is 15% lower. What is the core advantage of your company? "

4. Review of real procurement cases

Last year, the purchaser locked three suppliers through the ISLE exhibition in a Singapore shopping mall. The winning company won the bid for providing the following services:

• Free wind load calculation book (local mandatory requirement)
• Promising 72 hours of global accessories delivery
• Brightness adaptive algorithm passed TÜV certification

The two companies that were not selected were: ① Unable to provide English version CE certificates ② The cooling design did not consider the tropical climate and was eliminated.

Editor's opinion

There is a strange phenomenon in the LED electronic screen industry now - the parameters become more and more exaggerated, and small-pitch screens below P1.0 can be displayed at 8K at any time. In fact, P3-P4 is enough for ordinary commercial projects. Blindly chasing high parameters will only waste more money. The key is to look at the supplier​ ​Real engineering cases​​and​​Localized service capabilities​​After all, it will take at least 5-8 years to use the screen after it is installed. Data shows that 87% of after-sales problems lie in the power module and signal transmission links, and these two materials are where the cost is really needed!

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