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                                          Saturated block polyethers
                                          Ethylene glycol dimethyl ether series(EDM,DEDM,TEDM,TETREDM)
                                          Ethylene glycol diethyl ether series (EDE,DEDE)
                                          Ethylene glycol dibutyl ether series (EDB,DEDB)
                                          Diethylene glycol methyl ethyl ether (DEME), Dipropylene glycol ether(DPDM)
                                          Polyethylene glycol dimethyl ether series(NHD-250,NHD-500)

                                           
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