1. Non-flammable, No tar and other carcinogenic substance. No fire hazard , safe for second-hand smoking, no nicotine.
2. No environmental pollution. No danger of second-hand smoking.
3. Smoke in a public place.
4. Enable smokers to abstain from smoking non-painfully.
5. Give up smoking in a few days if you want.6. Save the smoking cost 80% each year.
