(Reuters) - Canadian contract electronics manufacturer Celestica Inc reported a 14 percent drop in quarterly revenue due to the loss of a contract with BlackBerry Ltd . The consumer business, which included sales from BlackBerry last year, accounted for 7 percent of total revenue, down from 21 percent last year. Sales at the communications business, the company's largest, rose 12 percent to $627 million, accounting for 42 percent of overall revenue. The business makes networking equipment for telecom companies. Total revenue fell to $1.50 billion in the second quarter From $1. ...

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