英文關鍵字
aluminum
aluminumwirerod
bars
barsections
blank
closeup
feedstock
foursquare
industry
iron
ironbar
ironbars
ironbillets
ironstick
manufacturing
metal
metallurgicplant
metallurgy
productionsector
rod
rolledsteel
sectionrolling
sectionshape
squarebariron
squarebarsteel
steel
steelindustry