Promoting a particular product through whatever method you choose can have no issue, but to tell your consumers that your products are made from Recycled Materials, you could only say that if those products you are promoting are totally 100% made of recycled materials. If you only used 50% of recycled materials and the other half comes from the raw materials, then you should have said "made of 50% Recycled Materials" instead.
Like for example, a consumer would only want to use paper materials for printing purposes that are hundred percent recycled, and it happens that from a book store there are several packs of papers that includes Made Of Recycled Materials in their packaging. How are these consumers be confident that what they purchased was really made of recycled fibers. We don't have any issue about how many percent of your product is recycled, but isn't it like cheating to your customers by claiming that you used recycled materials when actually the truth is not.
There are few products like remanufactured toner cartridges and ink cartridges that are 100% made of recycled components that comes from empty and used original cartridges. These printer cartridges are the very essential part of your printer, and using eco-friendly toner cartridges and ink cartridges can help to extend the life of your printer. Since these cartridges are genuinely made of recycled materials, they have the right to use and proudly include the words Made Of Recycled Materials in the packagings and shipment of their products.
Promoting products that are environment friendly can be simple and easy only if you do the proper way of business advertising and never would have cheat to your customers and potential market consumers.