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

Suchadee Tumrongsuk
Department of Manufacturing and Service Industry Management, King Mongkut’s University of Technology North Bangkok,Bangkok
Thailand

Witchayaporn Kruaiam
Department of Manufacturing and Service Industry Management, King Mongkut’s University of Technology North Bangkok, Bangkok
Thailand