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Introduction Of H4 Car Bulb | #h4 Car Bulb

Introduction Of H4 Car Bulb

Introduction Of H4 Car Bulb

The H4 car bulb is used for headlights, it contains two filaments, and you can choose a high beam and low beam in one bulb. So if your car is suitable for H4, you only need one set of bulbs to achieve the effect of high beam and low beam.