white, yellow and blue hard safety helmet hat for safety project of workman as engineer or worker, on concrete floor on city
Schlüsselwörter
architect,
architecture,
background,
blue,
business,
colours,
construction,
contractor,
employment,
engineer,
engineering,
equipment,
factory,
hard,
hard hat,
hat,
head,
headgear,
health,
healthy,
helmet,
industrial,
industry,
inspection,
isolated,
job,
maintenance,
plastic,
prevention,
protect,
protection,
protective,
safe,
safety,
security,
tool,
white,
work,
men at work,
working man,
yellow
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