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The beverage producer Coca-Cola nationwide all-day warning strike began.    Today remains empty bottle: The Cola workers strike. Sites, particularly in Bavaria, in the southwest and in northern Germany have been affected, a spokeswoman for the union food and Catering (NGG). Nationwide, 10,600 employees of the NGG have called for a strike. In late January, it had come to most of the 60 sites of the company to work stoppages. Six percent wage increase demanded NGG asks six percent wage increase for a period of twelve months. Coca-Cola headquarters in Berlin has offered a two-stage increase in revenue of 2.5 percent in the first year and 2.0 percent in the second year. Trainees should be given monthly 100 euros more. Coca-Cola said, after six rounds of negotiations in progress and accused the union of endangering the negotiations with strikes unnecessary. Both sides want to be on the 7th and 8 March down again at the table.