英文關鍵字
aluminum
background
building
construction
crane
energy
engineering
equipment
fabricators
factory
foundry
group
heavy
industrial
industry
interior
iron
line
machinery
manufacture
manufacturing
material
metal
metallurgical
modern
pipe
pipeline
plant
power
production
shop
stack
stainless
steel
steelwork
storage
structural
structure
technology
tube
warehouse
welding
work
workshop