private void AddNewSheet(string excelFilePath, IExcel excelApp)
{
excelApp.AddNewSheet(excelFilePath, "LRProduct");
excelApp.AddNewSheet(excelFilePath, "LRInsureCont");
excelApp.AddNewSheet(excelFilePath, "LRAccount");
excelApp.AddNewSheet(excelFilePath, "LJInvoiceRelation");
excelApp.AddNewSheet(excelFilePath, "LJInvoice");
}