1, depending on the place of origin
The place where Jin Siyan grows affects the quality of bird's nest products. The industry of origin is developed. The deeper the color of bird's nest produced by serious air pollution, the more impurities such as dust, the higher the rain and forest coverage area in the producing area, the better the hair and the higher the quality of bird's nest produced. Xiamen's "Yikangde" is a famous time-honored brand that nourishes the dry goods industry in the north and south, and has a history of many years.
2. Look at the hair of bird's nest
Bird's nest picked in different periods also has different "hair heads".
3. See if the bird's nest is clean.
The fewer bird's nests, the better the fine hair.
4, choose the type of lamps and lanterns
The thinner the head and feet at both ends of bird's nest, the better it looks.
5. See if the bird's nest is dry or not.
Dry and dry is the top grade. A good bird's nest should be dry to the touch. Wet bird's nest contains more water, and it will be moldy if it is stored improperly.