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BEIJING, March 26 (Reuters) -
* China's Shandong Wonfull was the first independent oil refiner to trade the newly-launched Shanghai crude oil futures in the early morning session, a company source told Reuters
* The source did not give any further details
* Independent refiners are often known as teapots
* Glencore was the first company to trade the derivatives which debuted on Monday morning (Reporting by Meng Meng and Josephine Mason; editing by Richard Pullin)