- Summer Training Course on Nondestructive Testing of Wood; University of Western Hungary, Sopron, Hungary. 25-29 August 2003.
- Short Training Sylvatest Duo; di EPFL, Lausanne, Switzerland. 01 September 2003.
- International Summer School “Forestry, Markets and Society”; University of Freibug, Germany, 18-29 July 2005.
- Training Course on Wood Processing Technology in Japan. Kyoto-Shimane, 4-15 September 2005.
- IUFRO Workshop on Nondestructive Testing of Wood and Wood Physic; Northeast Forestry University, Harbin, China. 7-9 Agustus 2006
- Pre-Conference Training Workshop. Forest Adaptation 2008. IUFRO, SLU, FAO. Faculty of Forest Sciences, SLU, Umeå, Swedia. 22 – 24 August 2008.
- The 14th Arborist Certification Programme Course. Malaysian Society of Arborist (Persatuan Arboris Malaysia, PARM). Selangor Malaysia. 17-26 July 2019.