The longer the duck (geese) breeding time, the longer the velvet grows: large velvet, more velvet, long velvet, more velvet ribs, and high fluffy. (Down with a bulkiness of 800 or more is generally selected by hand, so the price is very high, about 800-900 yuan/kg).

4-6cm white goose feather is widely used in different fields. It has the characteristics of large down, small feather handle, light weight, high filling force, tasteless, and high warmth retention.