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Separated and purified from tall oil pitch - sitosterol is a national originality. It has a yield of ≥ 50%, and quality reaching the United States Pharmacopoeia standards. It has been confirmed after application that the product can be used externally, and for the synthesis of estrone and other topical medications. It has low production costs in terms of its process (is better than the sitosterol extracted from rice, bran, oil and soapstock), and has better economic efficiency.