機器
blue
bolt
business
chemical
construction
drill
energy
engineering
environment
equipment
facility
factory
flange
fuel
gas
gasoline
industrial
industry
iron
line
manufacturing
metal
natural
oil
petrochemical
petroleum
pipe
pipeline
piping
plant
plumbing
pollution
power
pressure
production
pump
refinery
rig
stainless
steel
supply
system
technology
tool
tube
valve
water
well
work
定額
Oil and gas processing plant with pipe line valves. Oil pipeline valves in the oil and gas industry. Valve plug an oil pipeline in the field on a sunny summer day.の素材 [FY310128389851]
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