Santi Karisan
College of industrial technology and management, Rajamangala University of Technology Srivijaya
Thailand

Suporn Rittipuakdee
College of industrial technology and management, Rajamangala University of Technology Srivijaya
Thailand

Santiphong Khongkaeo
College of industrial technology and management, Rajamangala University of Technology Srivijaya
Thailand

Sittisak Rojchaya
Faculty of engineering and technology, Rajamangala University of Technology Srivijaya
Thailand