The 2019 National Day holiday is approaching, and I wish you a happy National Day in advance! Also attach the holiday notice for the National Day period (October 1st to October 7th)! Please understand and make relevant arrangements in advance, as detailed below:

1、 Holiday schedule: From October 1st to October 7th, 2019, a total of 7 days. I will work as usual on September 29th (Sunday) and October 12th (Saturday), 2019.

2、 During the holiday period, the Market Service Department will arrange relevant personnel to be on duty and handle it uniformly after the holiday.

Sorry for any inconvenience caused during the holiday period!

Thank you for your support of Calvin!

Nanjing Calvin Biotechnology Co., Ltd

September 2019