6 advantages of leomi slim HID product 1.Brilliant Manufactural technology The special patent of ballast we have are exclusively in China ,this is the most difference with other suppliers ,and superior than them ,also the Manufacturer Technology is developed synchronized with the Philips newest technology -dual core cpu processor . 2.Superest quality All leomi slim product promise all customers one year warrnty and this also insurenced by the National insurence company,and will offer all life repairing for the product you buy from leomi ,the strict and professional adminitrition system in our factory make the product pass all quality inspection before they left our factory 3.Low relectromagetic interence The electromagnetic inteference to the car electronic and ecu system and car radio system is nearly 0,this make our slim ballast can install on many luxury cars like Bmw,Audi ,Mercedes,and Hummer etc. 4.Delicate Manufacturing Technology Samllest size in the world ,Smallest size &Most Dedicated appearance &incomparable Quality in the world . 5. Quick Response . 6. Widely Usage Wide Input Voltage, have a strong control to the change of the car Voltage, so it is very fit for cars with 12v and 24v battery.