abbreviation for the city of 兰州 lán​zhōu in Gansu province

Zheng, a state during the Zhou Dynasty located in modern-day Henan province; also used as a shorthand for 郑州 zhèng​zhōu; (surname) Zheng

long in space or time; lasting

Finished oil products that have been processed and refined, such as gasoline or diesel

conduit; piping; tubing used for transporting or draining gases and liquids