PT. Juma berlian was known as UD. Karona. established since 1990 in north sumatera, now in second generation. We have a good reputation in cabbage export, potato export and many more. Our market is Singapore, Malayisa, Korea, Taiwan, Brunei. Now, we want to expand our market. Best price, Best quality, and Best service is always we do for our costumer. We registered in our National Law and Human rights Ministry as PT. Juma Berlian Exim.