英文關鍵字
cleaner
wash
building
glass
facade
service
urban
high
safety
equipment
crane
business
city
clean
cleaning
construction
cradle
dirty
exterior
glossy
gondola
harness
highrise
hydraulic
industrial
maintenance
manual
modern
nozzle
office
outside
platform
polishing
pressure
professional
reflection
spraying
washer
water
window
wiper
mop
worker
sprayer
telescopic
diagonal
lower