{"text_format":"3","workbook":"xlsx","n_sheets":1,"sheets":["Sheet1"],"read":"whole","date_system":"1900"}

{"sheet":"Sheet1","index":0,"n_rows":4,"n_cols":3,"rows_kept":4}
["PN","Qty","Price"]
["EP00001",10000,{"v":0.0367,"d":"0.036700"}]
["EP00002",null,{"v":1,"d":"1.000000"}]
["EP00004",10000,{"v":0.001,"d":"0.001000"}]