It simply means that what you present on a customer invoice is what the charge is intended for.
For example, some companies faced fines and class action lawsuits because they misrepresented a cost recovery fee, that they chose to impose on their customers, as a tax. A tax implies it was mandated by the government, when in fact it was not.
Applying a cost recovery fee or other surcharge to a customer invoice is a completely legitimate way some companies help pay for the cost of staying compliant with local, state, and federal government regulations. However, it must be completely transparent that the Fee is not represented as a mandated government charge.
On the flip side, your competition may choose not to assess any cost recovery fees or additional surcharges on their customer invoices, resulting in a lower overall cost for the exact same products sold.
In addition, some fees that are in fact mandated by the government can be passed through to the customer while others cannot. It is important to know what applies to your business and exactly what you can and cannot represent on a customer invoice.