On 13th April,Mr Jian Chaoxi who comes from TaiWang gave our staff a wonderfully creative lesson. We learned that what is the duck/goose down,the history of the duck/goose down and the purpose of the duck/goose down,the standard of duck/goose down and the how to distinguish the quality of the duck/goose down,the products which are made from duck/goose down,the raw material of the duck/goose down,how to purchase the raw material,the process of down production,the administration and management of the down factory,and so on.