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Celastrol has long been a hot subject in biomedicine. In 2007, Cell, a prestigious science journal, listed celastrol with the discovery of antimalarial drug artemisinin - which won chemist Tu Youyou the Nobel Prize in 2015 - among five natural herbal compounds with the most potential for modern medicine.

Carmakers, however, are worried about the rapid pace of the shift to fully electric vehicles and some have called for Beijing to maintain financial support for the auto market to help drive consumer demand.

Cheetah Mobile's booth at an expo in Beijing, April 30, 2016. [Photo/VCG]

Capital Economics based in London forecast slower growth this year for emerging Asian economies including Malaysia, Thailand and Vietnam.

Caterpillar has redesigned certain types of excavators to improve operator safety and comfort, increase efficiency, and lower maintenance costs. It also offered solutions using digital technology and aftermarket services to unlock operating efficiencies in construction.