Nutritional Ingredients: Palmitic acid 4.0-8.0%,Stearic acid 2.0-6.0%,Oleic acid 10.0-30.0%,Linoleic acid 10.0-30.0%,Alpha Linolenic acid 45.0-60.0%. Efficacy: Alpha linolenic acid is a kind substance of omega-3 polyunsaturated fatty acids, and can be able to catabolize directly in the body ,the metabolites are part of cell membrane, and become an inportant structural material. In which the most important material is polyunsaturated fatty acids such as DHA(docosahexaenoic acid),EPA(eicosapentaenoic acid),etc,and PG(prostaglandin).Once lack of them in the body, will cause fat metabolism disturbance, cardiovascular and cerebrovascular diseases. In 1993,WHO and World Food Organization advocated for the first time: ln view of the importance of ALA and the insufficient intake by body,recommend the supplementation of ALA, in the “Proposal on the Promotion of Dietary Supplement ALA”. The United States Food and Drug Administration (FDA)has identified flax seed oil as a kind of health food that is rich in ALA. The oil should be stored at a cool, dry place and protected from light. In the unopened drum,the durability of the oil is 24 months.Once open the drums have to be sealed with nitrogen,closed airtight and the oil has to be used up within 6 months.