air valve
business finance and industry
chemical plant
clay
construction
construction industry
control
distillery
drink water system
drink water tube
employee
expert
factory
fittings
fuel and power generation
gas refinery
gasoline
gate valve
gloves
headwear
helmet
industry
job
manual worker
occupational safety and health
oil pump
operator
petrochemical plant
pipe
pipeline
protective coveralls
protective workwear
quality control
refinery
refueling
repaired
responsibility
rubber boots
safety
service
staff
team leader
technical
technician
tube
underground
warning vest
water supply
work helmet
worker
定額
Worker works underground for reconstrucion of drink water system. Technical expert at gate valve on new pipeline system check of repaired connection before covering by clayの素材 [FY31078704612]
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