Hisea ChemQINGDAO LANGYI CHEM CO., LTD13E,HUAPU BUILDING, NO.68,XIANGGANG MIDDLE ROAD,QINGDAO,CHINATEL:+86-0532-85708917 FAX:+86-0532-85708018 CERTIFICATE OF ANALYSIS 品名:Product name:二甲基甲酰胺DIMETHYL FORMAMIDE批号Batch Number2023.12.01生产日期:Manu.date2023.12.01 执行标准standaardHG2028-91测定项目Index质量指标 Spe