Secoisolariciresinol diglycoside, SDG for short, is a kind of natural estrogens which is extracted from remainders after pressing flaxseed oil from flaxseeds.

   Suppliers in China generally provide 40% and 50% SDG.There exists technical difficulty for over 50% SDG.There are therefore only a few enterprises carrying out scale producton of 60% SDG.At present,suppliers can supply 70% SDG in large scale and a bit of hith-purity SDG.The production processes of 60% SDG are different in China.Some manufacturers can produce only in lab.Some cannot perfectly control the process in scale production.Of course,there are a few excellent suppliers capable of carrying out scale production.Therefore,60% SDG price varies considerably in domestic market.The highest price is 3500RMB/kg,the lowerset is 1200RMB/kg.

   Owing to small demand for 60% SDG,most suppliers have no stocks and generally begin production only when they receive orders.SDG suppliers are not many in China,let alone high content SDG suppliers.According to herbridge.com, Acetar Bio-Tech Inc.and Ningbo United Plant Technology Co.,Ltd.are domestic enterprises with comparative advantanges.The former can supply 40% and 50% SDG with 2 tons a month.They also supply 60% SDG.The later sucessfully developed the scale production technology at the beginning of the year.They can supply 500 kilogrames to 1 ton of 70% SDG presently.

   According to herbridge.com,SDG price will not change in the near future.The price for 20% SDG and 40% SDG is maintained at 500RMB/kg and 850RMB/kg,respectively.

                    （Source ：Herbridge.com）

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