It is distributed by various Pepsi bottlers, the biggest being the Pepsi Bottling Group Canada. The Coca-Cola Company owns a 68.3% stake in Coca-Cola Bottlers Africa. It went national soon thereafter by being franchised mainly to leading Coca-Cola and Pepsi-Cola bottlers. Coca-Cola Bottlers Africa's headquarters located in Port Elizabeth South Africa. Beverage America and Select Beverages bottlers were purchased from the Carlyle Group in February 1998. There are also local soft drink bottlers, who make various local varieties of soda. The original formula was invented in 1940 by Tennessee beverage bottlers Barney and Ally Hartman. Amongst older employed Pakistani women, many work as packers, bottlers, canners, fillers, or sewing machinists. Buffalo Trace also produces spirits for private bottlers and store brands. Pakola is currently produced by two companies, Mehran Bottlers Limited and Gul Bottlers. Many bottlers outside the U.S. also continue to use sucrose as the primary sweetener. Many bottlers of spring water use UV disinfection equipment to sterilize their water. Around 600 bottlers in the region produce 85 million liters of wine each year. In Pakistan, Vimto is produced, under licence, by Mehran Bottlers. Many commercial bottlers trace their recipe or production to the 19th century.