Dr. Yoshio Takehashi, Professor of Hiroshima University, Japan, visits Center for Oil and Gas Resource, Lanzhou, IGGCAS recently. In his visit, he receives the letter of appointment as Specially Hired Foreign Research Fellows.

In recent years, Professor Yoshio Takahashi cooperates with a number of counterparts of CAS. At this visit, Yoshio Takahashi cooperates with Professor ZHENG Guodong to carry out academic exchanges and field geological investigation.