After more than 20 years in medical business trading, Mr. Laurent Opportune opened the company Prosun Farm in 1997 in Thailand. Prosun Farm is a company working in sustainable business with farmers. Under the brand name Klongphaifarm, Prosun Farm helps the farmers to develop the quality of their products (mainly the poultry), raising them in most natural way without hormone and antibiotics. Prosun Farm works closely with chefs and try to develop product corresponding to their needs. Based on the French way of farming and respect of products, Prosun Farm tries to contribute to the development of quality of products on one side and development of farmers’ quality of life on the other side.