19/05/2014 (Reuters) - Malaysia, the world's second-largest palm grower, has kept its crude palm oil export tax for June at 5.5 percent, a government circular showed on Friday.

The Southeast Asian country has left its export duty unchanged since April.

The circular showed that a reference price of 2,595.71 ringgit ($804) per tonne was calculated for crude palm oil for June, effectively keeping the export duty at 5.5 percent. ($1 = 3.2305 Malaysian Ringgit)