| ÍÑÁ³ÕáÅÐà¤Ã×èͧ»ÃдѺ (Jewelry & Ornaments) | http://www.oie.go.th/news/improve_indust/wbook13/value11/sld002.htm
http://tawatchai.compsci.buu.ac.th/~sc382503/htm/gold_gem.html |
| à¤Ã×èͧÁ×ÍáÅÐà¤Ã×èͧ¨Ñ¡Ã (Machinery & Equipment) | http://www.krisdika.go.th/law/image/lawpub/lawe002/1.htm
http://www.eng.ku.ac.th/~webnews/saraban/tele-machine-agri-kampang.htm |