Glucose invoices are “ordinary” VAT invoices.
There are two types of invoices:
1. Value-added tax “special” invoices. This is issued for general VAT taxpayers. Consumers cannot obtain special invoices and there is no need to obtain special invoices.
2. “Ordinary” VAT invoice. This is what we usually call an ordinary invoice. For consumers, it is this kind of invoice that they need to ask for.