1. Test Blind on satisfaction of 20 volunteers . The perfume test must satisfied by 12 volunteers cannot be separated Centasia perfume and perfume original Giffarine use.
2. The products collect test stability period for 6 weeks and check items every week. The smell of perfume, each must be durable for more than 4 weeks old.
3. After doing perfume smell lasting more than 4 week. If there is more to the 1 company up to the need to bid price. You are the cheapest price . It has received an order from the Giffarine.