3. the Siam kito course. The use of hoist and crane August 25544. Technology Promotion Association (Thailand-Japan) (Thailand-Japan) course. 5s basics and techniques of chonwot assess the March 2558.
3. Siam kito course using winches and cranes สิงหาคม 2554 4. Technology Promotion Association (Thailand-Japan) (Thailand-Japan) 5s curriculum and assessment techniques Hrwh March 2558.
3. Siam Kito course using the hoist and crane, August 2554.4. Technology Promotion Association (Thailand-Japan) (Thailand-Japan) basic 5S traffic police techniques and evaluated in March 2558.