Zanzibar State Trading Corporation( ZSTC ) was Established in 1968 and given the authority by the Government to buy agricultural products such as Cloves, Copra, Sea–shells, Sea weds, Chilies and selling it to abroad such items and other related items like essential oils from the said cloves, eucalyptus oils, cinnamon leaf oils, lemongrass oil, clove stem and sweet basil oil.