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High Quality Shenzhen Indoor Led Display P4 Video wall

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1 Square Meter
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Company Information

Shenzhen LongRun Optoelectronic Co., Ltd.

CN Manufacturer, Trading Company
Response Time
Response Rate:
US$ 5,900,000+
6 Years Paid Supplier Supplier Trade Assurance
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Quick Details

Place of Origin: Guangdong China
Model Number: LR-P4
Product name: Indoor p4 led display
Pixel Pitch: 4mm
Pixel Configuration: 1RGB
Pixel Density: 62,500 dots/m2
LED Chip: Epistar
LED Lights: SMD 2121
Cabinet size: 512mm*512mm
Cabinet resolution: 128*128
Brightness: 1500cd/m2
Refresh rate: 1200Hz
Usage: Indoor
Tube Chip Color: FULL COLOR
Display Function: Video, Animation, Graphics
Pixels: 4mm
Screen Dimension: Customized
Selling Units: Single item
Single package size: 52X52X7 cm
Single gross weight: 9 KG
Package Type: 1. Flightcase carton 2. Polywood carton 3. Honeycomb cartoon

High Quality Shenzhen Indoor Led Display P4 Video wall



Product Description

1. The first level LED chip from Taiwan Epistar.

2. SMD 2121 black lamp

3. With pure golden wire connection in LED.

4. Ag alloy solder paster and copper plating thickness > 30mil on 4 layers PCB   

5. All new stainless steel screws when assembly.

6. 2 years warranty.


P4 960X960mm indoor rental profile aluminum cabinet 2.jpg



profile cabinet specification.jpg



Our Advantage
Packing Details


Aging test



Successful Case Show


Site: In Dubai indoor application






Site: In Germany outdoor application


germany application.jpg

Company Information

 LongRun perseveres in carrying on its relentless pursuit if excellent quality, focused on full color LED display's R&D, sales and service. It has its products successfully achieved CCC, CE, FCC, UL etc professional certifications recognized internationally. On quality control, it implements strictly and perfectly under ISO 9001:2008 quality certification system. In daily practices and applications, it emphasizes on 7S management standards. During producing process, it carries out strict quality testing on all processes of IQC, IPQC, QC, CFQC, QA and strict management on supply chain. Until now, LongRun has independently developed and manufactured a complete range of divercified display products. They have covered more than 40 countries with over 3,000 success cases in above 10 different application fields including advertising media, stage entertainment, sports stadiums, urban lighting, traffic guidelines, financial institutions etc. LongRun's LED display has own great favor from numerous clients home and abroad for its high definition, easy installation, smart design, stable quality etc. _03


Our Services

1.Warranty: 2 years

2.Replacement: 1:1 replacement for defective product

3.Online technicial support: Long distance online technicial support for 12 hours from 8:30am to 8:30pm and from Monday to Saturday.

4.Free training: free training in our factory is welcome and available on working days.

5.Professional advice: all clients could get our professional advice on cases or projects etc.



Q: What is the brightness, viewing angle and wavelength of the LED?
A: Luminous Intensity is equal to the amount of luminous flux emitted into a very small solid angle at a defined angular orientation from the light source. The measurement for luminous intensity is the candela. Symbol is Iv.
Viewing Angle is the total cone angle in degrees encompassing the central, high luminous intensity portion of the LED beam from the on-axis peak to the off-axis point where the LED intensity is 50% of the on-axis intensity. This off-axis point is known as theta one-half ( 1/2). Two times 1/2 is the LEDs' full viewing angle; however, light is visible beyond the1/2 point.
Wavelength is the distance between two points of corresponding phase and is equal to waveform velocity divided by frequency. It defines what color human eyes could recognize
Q: What is dominant wavelength? Please specify the ranges of wavelength in red, green and blue color respectively.
A: Dominant wavelength is defined as the best range of wavelength showing the most natural color recognized by human eyes. Researches indicate that fixed colors with wavelength of 620-630nm (red), 520-530nm (green) and 460-470nm (blue), in fact mixed in a particular proportion, can get the pure white. That is, in display field, people use luminous materials with above wavelength to make "compounded" white more natural.In order to get a good balance white led display, we specify the led colors with wavelength within 4nm for each color
Q: Which chip vendors are you buying from?
A: It depends on the Customer's requirement. We can purchase from Japan, Korea, Europe, USA. We are using chips mainly from Taiwan
Q: What is the chip size you're using for outdoor display? How about indoor display?
A: For outdoor display, we're using 12mil chip for red, 14mil for both green and blue. Regarding indoor display, 9mil for red, 12mil for green and blue are currently adopted
Q: How much will the brightness of LED drop down after 1000hrs?
A: Based on the result of aging test, the brightness decay of green LED is around 5%-8%, while blue is around 10%-14% and red is around 5%-8%