asian
central wastewater
chemistry
computer
construction
control
controls
design
engineer
engineering
estate
factory
gas
helmet
industrial
industrial estate
industrial plant
industry
inspect
inspection
laptop
male
male engineer
notebook
people
petroleum
plan
planning
plants
production
quality control
refinery
reservoir
safety
sanitary
sanitation
sewage
storage tank
tablet
technology
treatment
two
use
utilities
utilities sewers
water
water tanks
work
worker
working
定額
Industrial engineer and male architect discussing Control industrial plant systems and monitor water systems in engineering plants. utility water system sewers and wastewater treatment plantsの素材 [FY310208544739]
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