| Date | Description |
|---|---|
| 2022-03-17 | delete phone 2021.4.15-4.24 |
| 2021-06-16 | insert phone 2021.4.15-4.24 |
| 2016-01-27 | insert address Dragon Plaza, No.19, Miaoling Road, Qingdao,266061, China |
| 2016-01-27 | insert fax 0086-532-88960951/88891928 |
| 2016-01-27 | insert phone 0086-532-88960929/88969569/88969568 |