Although Vietnam has one of the oldest tea cultures in Asia, Tea has only been seriously involved in the field of bulk teas since the early 1980s and has recently become a serious player in the European market. While in the north of the country high green tea has been produced at altitudes of up to 1,500 m for about 2000 years, mainly orthodox black tea "trà man" is produced in southern Vietnam, including the deep plains around Lam Dong and Thai Nguyen.