... :15days.Use:1, thiourea can be used in drug and feed additive 2, bleaching agent and floatation agent of metallic mine3, dyeing ... auxiliary; 4, rubber accelerator; 5, developer and toner; 6, plating additive; 7, used in the production of gold and electrolytic copper ... to produce cold wave lotion; 10, used to produce thiourea dioxide ; 11, chemical reagent; 12, blueprint used in blueprint and clean ...