英文關鍵字
automated
background
bender
bending
business
coldrolled
construction
cutting
engineering
equipment
factory
heating
heavy
highquality
home
hotrolled
industrial
industry
iron
long
machine
machinery
manufacture
manufacturing
metal
metalroll
modern
part
pipe
pipes
plant
power
process
processing
production
profile
rolling
seamless
stainless
steel
steelmaking
strip
systems
technology
tool
tube
work
worker
working
workshop