How are car light tubes composed?

Part of the structure of Xenon HID headlight bulbs: ①100% quartz glass tube, strong UV resistance, effectively avoids damage to lampshades and reflectors, reduces light decay, and extends the service life of xenon bulbs ②The internal high-purity xenon gas has a purity of up to %, is more stable, and is 30% brighter than traditional xenon gas. The lighting speed is faster and more concentrated.