《商业机密：北极熊贸易黑幕》讲述的是：　　A gripping exposé of the polar bear fur trade, revealing how conservation, politics and commercial interests collide in ways the public was never meant to see.Trade Secret follows three unlikely allies on a mission to protect polar bears from international commercial trade. Filmed over six years across nine countries, the film exposes the sanctioned sale of hundreds of polar b...