Changsha natureway co., ltd. is a professional manufacturer of herbal extracts and green tea extracts in china.we totally have three factories with three laboratories, one key lab as r&d center. with development of more than 20 years, herb ingredient has become one modern factory, equipped with high-class extraction, concentration, isolation, purification, spray drying, sifting, grinding and packing machines. it specializes in the production of various kinds of herbal extracts, such as bilberry extract, citrus aurantium extract, echinacea purpurea extract, grape seed extract, kudzu root extract, panax ginseng extract, wild yam extract and so on.