英文關鍵字
aluminium
aluminum
armatura
background
cable
closeup
construction
copper
factory
heavy
industrial
industry
iron
light
manufacturing
material
metal
metallic
metallurgy
plant
process
product
production
roll
stainless
steel
string
wire
英文關鍵字
aluminium
aluminum
armatura
background
cable
closeup
construction
copper
factory
heavy
industrial
industry
iron
light
manufacturing
material
metal
metallic
metallurgy
plant
process
product
production
roll
stainless
steel
string
wire