英文關鍵字
aluminum
angular
background
black
channel
chrome
colorful
construction
diameter
engineering
equipment
factory
finished
group
heavy
industrial
industry
iron
machine
making
manufacture
manufacturing
material
metal
metallic
new
objects
openair
outdoors
panorama
pipe
pipeline
piping
plumbing
product
production
profile
reconsidered
shiny
square
stack
stainless
steel
storage
technology
tool
warehouse