Hid, hid bulb , hid headlamps were introduced in 1997 as an option around the BMW 7-series. This first program utilized an unshielded, non-replaceable burner designated D2 - a designation that would be recycled years later to get a wholly various type of burner. The silm ballast was about the size of a building brick. The first American-made effort at HID bulb was around the 1996-98 Lincoln Mark VIII, which utilized reflector headlamps with an unmasked, integral-ignitor burner made by Sylvania and designated Type 9500. This was the only system to operate on DC; reliability proved inferior towards the AC systems. The Kind 9500 program was not used on any other models, and was discontinued after Osram's takeover of Sylvania. All Hid ballast worldwide presently use the standardised AC-operated bulbs and ballasts. For guangzhou fuchw industrial co., ltd