Best HID Xenon Kit Quality Control1. 100% of our Slim xenon HID kit well tested before being packed and shipped;2. Efficiency Rate Test, ensuring all have gained over 80% efficiency;3. Working Temperature Test, under 50, lower temperature longer service life;4. Wave Band Test, the more standard of the wave, the less electron impact will cause;5. Other testes, such as aging test, waterproof, anti-vibration, etc.6. All effort to make our products 100% qualified.-------------------------------------------------------------------------------------------------------------------------------------------------------------------Featured Service1. Profession, over 5 years' experience in HID xenon kit;2. Attentiveness, fast respond, full and accurate information provided;3. Reliability, quality well tested by the markets and price competitive;4. Good after-sale service, 14 months warranty and friendly return policy;