| The first director and vice director | The second director and vice director | |
  |
 | |
| Dr. Yuan Ye Li Dr. Yi Soon Kil | Dr. Yi Soon Kil Mr. Chen Sui Tian |
| The third director and vice director | The forth director and vice director | |
  |
  | |
| Mr. Yu Yuan Cheng Mr. Park Jin Kyun | Dr. Lee Dong Young Mr. Tan Gong Ke |
| The fifth director and vice director | The sixth director and vice director | |
 |
  | |
| Mr. Tan Gong Ke Dr. Yoo Hong Ryong | Dr. Jung Hoi Soo Mr. Han Jing Yun |
| The seventh director and vice director | The eighth director and vice director | |
   |
  |
| Mr. Zhu Ming Yuan Mr. Kim Hyun Yeong Dr. Park Kwang Soon Dr. Chen Shang |
| (2008.5 - 2009.7) |
| Mr. Kang Hae Seok |
| (2009.7 - 2010.5) |
| The ninth director and vice director | The tenth director and vice director | |
  |
  | |
| Dr. Zhang Zhao Hui Mr. Koo Bon Kwan | Dr. Kwon Jae Il Dr. Zheng Wei |
| The 11th director and vice director | The 12th director and vice director | |
  |
  | |
| Mr. Yang Yafeng Dr. Jung Kyung Tae | Dr. Oh Young Min Dr. Liu Haixing |
| The 13th director and vice director | ||
 |
 | |
| Dr. Liu Haixing Dr. Choi Dong Lim |
 |
 |
 |
 |
