semi shield oil cylinder

valve stem oil shield

oil gas shield type transformer

correlation of oil-oil

Croton oil (Oil of tiglii)

oil-oil correlation

Society of Automotive Engineer (SAE)oil oil

bean oil soybean oil

cassia oil cinnamon oil

caster oil-based lubricant oil

cinnamon oil cassia oil

colorless oil-tea camellia seed oil

Essential oil Volatile oil

Extract Oil of Lubricating Oil

First Oil Extraction Factory of SINOPEC Jiangsu Oil Field

fuel oil and lubricating oil compartment

fuel oil tank [= oil fuel storage tank

Gudao Oil Production Plant of Shengli Oil Field Limited Company

heat exexchanger between poor-oil and rich-oil