July 10 (Reuters) - Swiss chocolate maker Barry Callebaut BARN.S lowered its annual volume guidance on Thursday due to what it describes as "unprecedented market conditions" in the cocoa bean market.
The world's biggest chocolatier, which supplies key food producers such as KitKat maker Nestle NESN.S, expects its sales volume to fall by 7% in the year ending on August 31.
It had previously said it expected the cocoa sales volume to fall by a mid-single-digit percentage due to volatility in cocoa bean prices that trade in London at around 5,455 pounds per metric ton LCCc2.
(Reporting by Paolo Laudani and Maria Rugamer in Gdansk, editing by Milla Nissi-Prussak)
((Paolo.Laudani@thomsonreuters.com;))