H4 for car headlights with quartz glass

1. Blast-proof. It can work perfectly as it meet with cold water. So working under any air
condition is possible.
2. Strict quality control. 6 times of test is needed from glass tube to bulb, including leak test,
low temperature test, profile test and 3 times of light test.
3. Reasonable and competitive price in the world markets
4. Krypton gas makes it a long life span
5. High Luminous flux output
6. White and UV-top quartz glass tube can be chosen.
7. Four colors are available: clear, blue, yellow, rainbow.
8. The deep of Blue color can be customized. B4 level is deeper than B3, and the light the
bulb emitted is whiter than that of B3 level.

Drawing