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Chinese factory | Blowing Agent | Foaming agent Molecular formula: C2H4N4O2; C NO.:123-77-3; O/A payment terms available www.rishengchem.com/ Chinese factory | Blowing Agent | Foaming agent | rishengchem.com Molecular formula: C2H4N4O2; C NO.:123-77-3; O/A payment terms available www.rishengchem.com/ |