the celebrating labour day with machine tools theme ornaments of honoring workers contributions.

machine technology design concept equipment engineer background construction industry industrial modern engineering symbol celebration business service work casual laborday job national occupation project 39aph39 sday automatic professional mechanic future metal innovation labour mechanism equipments motor machinery mayday futuristic gear cog circuitboard nuts bolts rings bokehbakcground glitters blackbackground redbackground bluebackground whitebackground celebrating day tools theme ornaments honoring workers contributions ideal event promotions educational materials social media campaigns decorations