US imposes 5% tariff on Chinese solar panel cells
21 March 2012 Last updated at 03:00 GMT
Trade tensions between the world's two largest economies, the United Stares and China, have risen with the decision by Washington to impose tariffs of nearly 5% on Chinese manufacturers of solar panel cells.
The move follows a review by the US Commerce Department which in a preliminary decision claims that Chinese firms are benefiting from unfair export subsidies.
William Hess is managing director at the consultancy firm China Analytics.