英文關鍵字
manufacture
metal
strip
from
stainless
steel
rolling
machines
highquality
rolled
industrial
production
profiled
parts
element
long
fusion
products
coldrolled
produced
hotrolled
calibrated
ways
manufacturing
processing
industry
treatment
handling
working
work
cycle
process
metalroll
factory
closeup
seamless
technology
pipes
are
finished
product
hands
background
grind
edges
profile
pipe
manual
finishing