r target="gpBillPreview" ></p:printer>
                            </p:commandButton>
                            <p:commandButton class="ui-button-success mx-2" icon="fas fa-file-excel" value="Excel" ajax="false">
                                <p:dataExporter type="xlsx" target="tbl" fileName="Total Stock" />
                            </p:commandButton>
                        </h:panelGrid>
                       
                        <h:panelGroup id="gpBillPreview">
                            <p