1.How long could I receive the inquiry reply?

A:You will get our reply within 24 hours.

2.What kind of led display do you offer?

A:Different product offers different time warranty, but we offer at least 2-5years warranty.

3.How is the after sales service?

A:We have a professional after-sales team, we also have a service hot-line dealing with your feedback. We also offer 24-hour online service to help you solving problems

4.How long will it take to deliver goods?

A:We will start preparing goods when we get your deposit receipt. The product will be ready soonest when it's in production.

5. What is the brightness, viewing angle and wave length of led chip?

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.

6. What is the dominant wavelength? Please specify the range of wavelength in red/ blue/ green 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.