The Journal of King Mongkut's University of Technology North Bangkok
วารสารวิชาการพระจอมเกล้าพระนครเหนือ

Hanphon Mitwong
Industrial Technology Program, Faculty of Industrial Technology, Nakhon Si Thammarat Rajabhat University, Nakhon Si Thammarat,
Thailand

Weerayute Sudsomboon
Industrial Technology Program, Faculty of Industrial Technology, Nakhon Si Thammarat Rajabhat University, Nakhon Si Thammarat,
Thailand

Chatchai Kaewdee
Industrial Technology Program, Faculty of Industrial Technology, Nakhon Si Thammarat Rajabhat University, Nakhon Si Thammarat,
Thailand

Weeraphol Pansrinual
Industrial Technology Program, Faculty of Industrial Technology, Nakhon Si Thammarat Rajabhat University, Nakhon Si Thammarat,
Thailand

Sittichai Kaewkuekool
Department of Production Technology Education, Faculty of Industrial Education and Technology, King Mongkut’s University of Technology Thonburi, Bangkok,
Thailand