hid kit 1, High quality 2, Pretty competitive price 3, Fast delivery ... tests:1, 6 hours continuous working aging test2, Connection circuit protection test3, Shot circuit protection test4, Lack ... Polarity protection test10,EMC anti-jamming testHID advantage:1,High brightness: three times lumunous flux as that of ... working day5, Extended warranty can be negotiated High quality and low price hid kit