Are the sales and services of elevators invoiced together?

Whether elevator sales and services are invoiced together needs to be confirmed by all business participants according to the actual situation. If elevator sales and installation services are provided by different enterprises, they must be invoiced separately. If it is provided by the same enterprise, it needs to be confirmed according to the contract. If separate invoices are agreed, different tax rates will apply. If they are together, the invoice will be issued according to the construction.