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How many led chips do you use on the 7" led headlight chasing halo?

Are the K1 and Q1 type made with the projector module with solenoid Valve?

How do the Q1 & K1 7" led headlight to avoid the foggy immersed?

How does your factory to do waterproof for the headlight?

Do your current suppliers can control the waterproof problem better? How?

How to find out the supplier who control the waterproof the best?

How to distinguish the LED headlight waterproof grade?