英文關鍵字
ventilation
factory
pipes
metal
manufacture
worker
pipe
machine
duct
industrial
construction
technology
industry
architecture
shop
manufacturing
modern
cooling
equipment
vent
investment
steel
silver
zinc
metallic
rolling
engineering
warehouse
premises
galvanize
air
work
building
bend
brilliant
aeration
assembly
make
aluminium
interior
design
ceiling
conditioner
circulation
products
workers
technologies
systems