China Mobile, the largest mobile service provider in the world, derives most of its revenues from mobile services as well as valueadded services like data, SMS, mobile Internet, voice mail and other features.
The NAHT's leadership criticises Ofsted inspections for what it believes is over-reliance on data, such as the Sats tests and data known as "contextural valueadded" - a measure of progress pupils make throughout their time in school.
Their official data on exports show that low valueadded production accounts for a declining share of total exports, falling to below 50 percent since 2008.