1. The lighter body is transparent, smooth and bright without trace of scratch or shrunken sight.
Bright colors (transparent, semi-transparent or opaque.
3. Ignite successfully with ensured igniting rate of 98% up.
4. The flame is stable.
5. Flame adjustment can be made freely without any failure.
6. Lighter head is fixed tight to body without loosen signs.
7. Plastic tray is rigid and strong enough.
8. Inner box are polished, with bright colors.
9. Leakage rate is less than 0.5%.
10. Delivery date is exact.