金属産業
manufacturing occupation
aluminum
アルミニウム
abstract
backgrounds
business
business finance and industry
construction frame
construction industry
cylinder
engineering
equipment
factory
ferrous sulfate
heap
heavy
heavy metal
holding company
industrial equipment
industry
iron metal
manual worker
manufacturing
material
men
merchandise
metal
metallic
metallurgy
new
occupation
occupational safety and health
one person
order
people
pipe tube
pipeline
production line
profile view
protective glove
quality control
rod
stainless steel
steele
textured
working
working class
workshop