Global and China Mobile Phone (Cell Phone) Assembly Industry Report, May 2013, Berkshire Hathaway
This report is a business report on figures relating to China and cell phones. There really isn’t much else to this source, people collected large amounts of data and put it into a report and performed statistics on it to make numbers important to business people.
This is a report by Berkshire Hathaway, an American Multinational Conglomerate, and they are very interested in business related things. It is quite safe to assume that a report published by them is credible and valuable to businesspeople.
It is vast and the full report is very expensive, however the preface provides a summary of the report including all necessary useful data. This can easily be implemented with claims that require numbers or statistics to back them up.