By state Meiyi's savoury flavours are divided into three categories:
1) Liquid flavour:They can effectively add aroma, at the same time they can improve
taste. Some of them are water soluble, while others are oil soluble
2) Powdered flavour: Some powdered products aim for top-note and they are used to
add aroma, at the same time they can improve taste, while others aim for better
taste
3) Paste flavour: They can improve aroma and taste at the same time