oil tank clean -免费送彩金

免费送彩金
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fields：
aerospace
electrics and electronics
new energy
transportation
consumer electronics
industrial manufacturing
construction and building materials
petrochemical industry
medical treatment
energy saving and environmental protection
category：
ocean engineering
fine chemicals
biochemical
petrochemical
oil exploitation
coal chemical
details：
recycled waste-water treatment for oil well
off-shore production platform
oil exploration
oil well drilling rod
petroleum machinery
oilfields energy conservation
oil tank clean
already selected：
applications
petrochemical industry
oil exploitation
oil tank clean
oil tank cleantotal： 0
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