| http://www.w3.org/ns/prov#value | - The combined global sales of all manufacturing companies involved in making goods such as cars, computers and clothing are put at about $15,000bn (??7,975bn) a year.Of this, 10 to 20 per cent comes from some kind of service function, whether it is charged for separately by the company or included in the price customers pay.An example of the former is the service contracts agreed by customers with
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