news IEC 61730 UV Aging Inhibitor of Foaming Retarder 1027 in Photovoltaic Panel Frame Sealant The application of foaming retardant 1027 in photovoltaic panel frame sealant and research on ultrav... 03/1962IEC 61730 UV Aging Inhibitor of Foaming Retarder 1027 in Photovoltaic Panel Frame Sealant