6. Structure of TIENS Group
Tiens R & D & Chemical InspectionTiens R & D & Chemical Inspection
CenterCenter
Tiens International EducationTiens International Education
& Training Center& Training Center
7. Structure of TIENS Group
Tiens R & D & Chemical InspectionTiens R & D & Chemical Inspection
CenterCenter
Tiens International EducationTiens International Education
& Training Center& Training Center