英文關鍵字
equipment
plastic
pipeline
pipe
line
water
tube
construction
black
technology
industry
engineering
industrial
work
welding
power
plumber
plant
automatic
safe
service
modern
shiny
together
tool
welder
production
material
steel
machine
blue
hot
design
job
glue
business
handle
control
electric
heat
inside
machinery
device
lock
fast
help
hose
background
connect
connection