I Want to Introduce the Dragon Fruit

My village is famous (farmos) for the dragon fruit. Do you know/ have you heard about the dragon fruit? It's very delicious and if you come to Vietnam you could sample it. (try to eat them you can come back to Vienamese.) The dragon is used to (make) to make desserts and is very good for your health (healthy) and (make) to make juices,....
In Vietnam(ese), the dragon is very cheap, about $2/kg . In the future, I hope the dragon can be exported to (export) a lot of / many countries (country) in the world. (wold) 

Thank you for telling us more about the dragon fruit. I have tried it once and found it very tasty. 'Sample' means to taste something. Vietnam is how we spell your country's name; Vietnamese is someone or something that comes from Vietnam.