ROYALIN BLOG

FAQ

Bi Xenon VS. Xenon – What’s The Difference

Xenon and Bi-Xenon headlights use similar HID technology, but their beam functions are different. This guide explains how Xenon and Bi-Xenon projectors work, what the solenoid and cutoff shield do, and what retrofit shops should check before replacing or sourcing a projector.

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fog light bi-led projector lens
Purchase Guide

What Is Fog Lens?

Fog light, just as its name implies, is a light used on fog day and located below the headlight assembly. Fog lamps are usually mounted reasonably low—typically about 12 to 30 inches above the road surface—and angled downward to illuminate the ground below the fog.

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Purchase Guide

What Is Custom Headlights

Compared with factory headlamps, custom headlights means certain changes upon original headlamps, adding components that do not exist before, such as headlight lens, halo rings, LED strips, decorative shrouds…

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Purchase Guide

4 Types of Headlamps You Must Know

With the development of science and technology, headlamp goes through upgrade and update. So does people’s needs and demands. Nowadays, lots of people are interested in or keen on headlights retrofit.

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Diagram showing Bi-Xenon Projector Lens internal mechanism
FAQ

What Is Bi-Xenon Projector Lens?

A Bi-Xenon projector uses an HID light source, cutoff shield and solenoid to provide both low and high beam from one projector. This guide explains how the system works, common projector types, bulb compatibility and what retrofit businesses should check before replacement or sourcing.

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Purchase Guide

5 Reasons To Make Headlights Retrofit Popular

Have you ever been aware of that more and more people want to upgrade their car/motorcycle/truck headlamps and many of them have already started or finished it? There are more retrofit shops in your local place those years, right?

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Purchase Guide

Do Brighter Headlight Better?

Now LED headlights and even laser headlights have become more and more popular in the headlight retrofit market. And the brightness of many car headlights is getting higher and higher. Many consumers even blindly distinguish the quality of vehicle headlights by the brightness of the lighting. In fact, this is

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the car light dimming cloth
Purchase Guide

Do You Know Light Dimming Cloth?

1. What’s light dimming cloth? When we come to the retrofit shop, we also see this photo on the wall. And technician put the car lighting on the wall to do some testing. And said”Perfect, it’s OK”. But you are confused. You must want to say “what”? Why it is

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