National Salt Company Nigeria Plc (NASCON) manufactures and markets a range of edible salt for industrial use and iodine-fortified kitchen salt for domestic use in Nigeria. By-products from the salt refining process include fine (butter) salt used to make biscuits and confectionary products; and granulated kitchen salt and industrial salt. The company has factories located in Oregun, Apapa and Port Harcourt and installed capacity of 400 000 tonnes per annum for 25-50 kilogram bags of salt and 100 000 tonnes per annum for salt sachets. Salt products for domestic use are marketed under the brand name Annapurna and Dangote. Annapurna is a brand name owned by West Africa Popular Foods (WAPF) as a joint venture between the former NASCON and Unilever Nigeria Plc. The company was established in 1973 and formerly known as National Salt Company of Nigeria Plc. Its head office is in Lagos, Nigeria.