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Weishi Biotech, has been devoted to the health food field since 2005 and is engaged in the production and sale of vitamin A, D3, E, K1 as well as other oil-soluble vitamins. Since its establishment, Weishi has filled the domestic market requirement of food-grade vitamin A, D3, E and K1 double-encapsulated microcapsule powders and has become the drafting unit of the national food safety standards for vitamin A palmitate and vitamin E (dl—α--tocopherol). Weishi is GMP, HACCP, ISO22000, ISO9001, KOSHER, FAMI - QS approved and also holds other international authoritative certification and we have fulfilled the implementation of all of these requirements.