For competitive reasons, the supplier of this resin has asked us to keep the details confidential, and we're legally bound to do so. But we can tell you that it's a resin that we use to form a plastic bag and its zip closure, and that it is compostable through curbside commercial composting that accepts food scraps and compostable bags. (Not for backyard composting.) Check for availability of curbside commercial composting in your community; these facilities do not exist in many areas.

Bio Green 347PC is a colorant, or dye. We add dyes to products for a variety of reasons including helping you see where you applied the product, when a product is used up, or for aesthetic reasons. Bio Green 347PC is added for aesthetic reasons – it is used to add color to a bag. It is a product of PolyOne Corp., which is responsible for its contents.

SunSharp FD Compost Green is an ink, which is a liquid that contains pigments or dyes to provide color. Inks are designed to adhere to a surface to produce an image or text. SunSharp FD Compost Green is an ink that we use to print on a compostable bag. It is a product of Sun Chemical Corporation, which is responsible for its contents.