​​1. First look at these three tricks when choosing a supplier​​

​​“How to prevent the leather bag company from cheating money? ”​ ​
I searched for LED screen advertising cars online, and the screen was full of "manufacturer direct sales". After chatting, I found that I didn't even dare to post photos of the production line. Remember these three tricks:

• ​​Qualification check​​: Real manufacturers have ISO9001 certification + a level 100,000 dust-free workshop.​​Monthly production capacity exceeds 10,000 square meters​​Only by ensuring that delivery does not delay
• ​​Touch the box​​: Go to the factory and press the screen seam with your own hands. Don’t buy if the gap is over 0.5 mm. This kind of bumpy run will cause water to enter.
• ​​Look at the case​​: It is required to watch real shots of projects of the same type, such as the case video of the stadium fence screen changing to advertising cars, and focus on observing the playback effect on rainy days

Last year, a customer found a small workshop with a cheap picture, but the box was disintegrated when the car screen ran on the highway because it was not done.​​100,000 kilometers of vibration test​​. Remember – the structural strength of a mobile device is more important than the parameters!

​​2. The secret of the technical parameters​​

​​“Is the outdoor brightness 4000cd/m² enough? ”​ ​
This number sounds quite intimidating, but it depends on the actual environment. The transparent window screen we installed in Seoul, for use during the day​ ​Intelligent light sensing adjustment​​, the measured peak brightness voltage to 3800cd/m² is more power-saving. The key is:

• ​​Lamp bead brand​​: The screen with imported chips can be controlled within 0.01% in three years
• ​​Heat dissipation design​​: Dual air duct cooling is 40% faster than single fan, so you don’t have to worry about black screen when traveling long distances in summer
• ​​Seismic structure​​: Aluminum-magnesium-zinc alloy frame + honeycomb shock absorber layer, the screen does not shake through the speed bump

​​“Is IP65 waterproof true or false? ”​ ​
I will teach you a ruthless trick - use a high-pressure water gun to rush the seam! A true waterproof screen can do:

• Box drainage hole belt​​One-way valve design​​, prevent backflow
• Power module made separately​​Glue filling treatment​​
• Get the issued by a third party​​72-hour salt spray test report​​

​​3. Purchase process anti-pit manual​​

1. ​​Need Diagnosis​​ → How many kilometers to run every day / what content to play / budget → Set screen size and power supply plan

   • Short-distance selection in the city​​P4-P6 screen + lithium battery​​, 8 hours of battery life is enough
   • Cross-provincial tour​​Small spacing below P3 + diesel generator​​, the brightness is adjusted to 5000cd/m² and is not false

2. ​​Solution comparison​​ → Get at least 3 configuration lists → Focus on these three items:

   • ​​Warranty Terms​​: Light beads are protected for 5 years, and control system is protected for 3 years.
   • ​​Operation and maintenance costs​​: The annual electricity bill per square meter is really energy-saving
   • ​​Modification compliance​​: You must bring a vehicle certificate, otherwise you will not be able to get a license plate.

3. ​​Sign a car inspection contract​​ → Take the master to test the machine on-site → List of required inspection items:

   • Temperature rise measured for 4 hours continuous playback (shell temperature <60℃)
   • Accelerate the box displacement (offset is less than 2mm)
   • Observe whether the control box is condensed on rainy road

​​4. Hidden test points for after-sales service​​

​​“Is 24-hour response bragging? ”​ ​
Last year, Typhoon Day helped customers to repair the Korean project, which took 9 hours from the time of repair to the recovery. Reliable services need to be viewed:

• ​​Spare Parts Library Level​​: Inventory of consumable parts such as driver ICs ≥5 years of consumption
• ​​Remote Diagnosis​​: Can pass fault codes in real time through 4G modules
• ​​Training system​​: Must provide​​Vehicle screen operation qualification certificate​​Training, especially power supply switching operations

A customer forgot to turn off the generator and cut the mains directly, and burned three receiving cards. Now our training course emphasizes:​ ​Dual power switching interval must be >30 seconds​​！

Buying LED screen advertising cars is not a one-time deal, it depends on whether the supplier has it.​​110 countries’ implementation experience​​, like the kind of manufacturers who have only made fixed screens, do not understand the metaphysics of mobile devices at all. Next time I go to the factory to inspect them, focus on their​ ​Aging test line​​——Those who can simulate the temperature difference in Xinjiang and the humidity in Hainan are real experts!

for more product information and pricing, please contact us .