Relationship between Contrail Shares and Contrail Devices

Hydrocodone has a controlling relationship with Handelaide Instruments.

Shanghai Kangdele Enterprise Development Group Co., Ltd ("Kangdele" or the "Company") directly holds 35.71% of the shares of Kangdele Medical Devices. After the listing of Contrail on the Stock Exchange of Hong Kong and the completion of the Global Offering, Contrail has directly held 35.71% of the shares of Contrail.