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Prepare invoices by exporting from the E-Promotion system into the accounting 
                                            program and open according to the quotation of the sales department.
                                        
                                     
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Prepare billing documents. and check the completeness and correctness of the 
                                            documents used in the billing Ready to deliver documents to customers.
                                        
                                     
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Follow up on receiving payments from customers. and open a receipt/tax invoice 
                                            to receive payment from customers.
                                     
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Prepare bank deposit slips to deposit cash and checks received into the bank 
                                            and verify the completeness of bank deposit slips that are returned from the bank.
                                        
                                     
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Arrange Make a registration report to control the billing of customers.
                                        
                                     
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Prepare a report for registration to control new customers.
                                        
                                     
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Prepare a report to reconcile invoice opening with the sales department and the E-Promotion system.