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        Shandong YINRUI Flame Retardant under the YINFENG GROUP is a professional manufacturer and supplier of Magnesium hydroxide flame retardant.
         YINFENG GROUP was established in 1999 with registered capital of RMB 1 billion, Until now, YINFENG GROUP has been formed of three parts of operation, which are financial, real estate and biological.
         With advanced production techniques, Shandong YI...