Well-Done's advantage: We use the best materials and the top technology. Different materials cause different qualitty, Well-DOne knew this piontly very clearly, therefore, our electronic components are imported from Japan, the first-rank equipments are imported from Germany Braun, we use the current best technology of the world but NOT the current best method. Our factory is ISO9001 & ISO14000 certificated, our HID products are CE and RoHS certified, and we use our own patent HID bulb that brighter and longer lifetime and less glare compared to other brands. Real lifetime is more than 3000 hours, and could remain more than 80% lumen after 2200 hours burn, which is 60% higher compared to other brands. Well-Done's ballasts are Intelligent Digital Ballasts that have "Power Auto Supply" function, this function makes the HID system to be extreme firm and steady no matter how fluctuate the imput power is.