My answer is not necessarily correct, it is for reference only. Let me make it clear that I am not offering you a reward or taking your order. It is better for you to do the business you negotiated by yourself. If you don't know what to do, just ask your peers for advice.

The answer is as follows:

First, clearly write down the name, characteristics and attributes of your new product (that is to say, clearly understand what it is).

Second, write clearly why you classify this product into a similar group of a certain category, and which of the existing standardized product items is closer to this product.

Third, write clearly how your new product is different from existing standard product items and why you should treat it as a new product item.