THE number of merchants attending Phnom Penh’s second annual gem exhibition has doubled over last year's figures, Bureau Chief of the Trade Exhibition Kep Vutha said Wednesday. Traders from six Asian countries have reserved booths for the June 3-6 showcase at Phnom Penh’s NagaWorld Hotel and Casino. Last year’s event included only traders from Cambodia and Thailand due to “a very short time for promotion”, but the forthcoming exhibition will also showcase gemstones from traders based in Hong Kong, China, Malaysia and Vietnam. Kep Vutha said: “We hope Cambodian people and foreign businesspersons will come to enjoy the event and further support us.”