英文關鍵字
manufacture
metal
strip
from
stainless
steel
rolling
machines
highquality
rolled
industrial
production
profiled
structures
long
products
coldrolled
produced
hotrolled
ways
manufacturing
processing
industry
treatment
handling
working
work
cycle
process
metalroll
factory
closeup
seamless
technology
pipes
finished
product
grinding
machine
processes
metalworking
alloy
welded
profile
finish
polishing
checking
leaks