Tâm Châu began operating in May 1999 in Bảo Lộc, the tea town of Lâm Đồng province, and describes itself as one of the companies that made oolong production work in Vietnam. It farms about 160 hectares across three estates planted with oolong cultivars, Oolong Thuần, Kim Tuyên, Thanh Tâm and Tứ Quý among them, and processes the leaf in its own factories, including one at Đambri. In Ho Chi Minh City it sells from a showroom at 110 Đinh Tiên Hoàng in Đa Kao, District 1, and from shops at 117 Bùi Hữu Nghĩa in District 5 and 42 An Dương Vương in District 8.
Oolong is most of the shelf and comes in every format the company makes: a 100 g foil pack at 80,000 ₫, a green-roast Thuần xanh and a red-roast Thuần đỏ in 100 and 300 g, a wooden box in 100 and 200 g, the Hoàng Tâm box of 200 g, and tea bags in 50 g packs, one of them a GABA oolong. Four scented oolongs, with chrysanthemum, rose, jasmine and osmanthus, come in 80 and 100 g. Beyond oolong there is Móc Câu green, jasmine green in three packagings, a pandan-scented Sâm Dứa, black tea in bags and two matchas, a culinary and a premium grade.
The rest of the catalogue shows what a Bảo Lộc company is: artichoke tea, the Đà Lạt region's own infusion, in 200 g packs and in tea bags, a long shelf of ground and instant coffee under the Jenna and Kye names, and seasonal gift sets. The website takes orders and lists a wholesale programme as well as the showroom's phone line. Opening hours for the Đinh Tiên Hoàng showroom are not published on the site, so call before visiting.