crude oil futures extended losses sustained overnight during mid-morning asian trade aug. 19, as concerns over the slown in oil demand intensified after us data showed a build in us gasoline stockpiles, while investors remained spooked by the delta variant spread.

　　crude oil futures extended losses sustained overnight during mid-morning asian trade aug. 19, as concerns over the slown in oil demand intensified after us data showed a build in us gasoline stockpiles, while investors remained spooked by the delta variant spread.