Last month, Apple shared an environmental report specific to the iPhone X. One detail in the report is that “100 percent of packaging fibers are sourced from responsibly managed forests, bamboo, waste sugarcane, or recycled paper.” Now, Apple has released a white paper thoroughly detailing its “Paper and Packaging Strategy”.

This past summer, Apple released a video sharing its efforts to responsibly manage 100 acres of forest by 2020 as one part of the company’s three-part “Paper and Packaging Strategy”.

Today’s paper is broken down into sections that cover “Paper Footprint”, “Efficient Packaging”, Responsible Sourcing”, and “Creating and Protecting Sustainable Working Forests.”

The paper includes details on Apple’s progress with iPhone packaging with this iPhone 6s and 7 comparison:

It also documents specifics about what the company is doing in the U.S. and China to create and protect sustainable forests.

As for China, Apple has partnered with WWF.

Apple’s other recent environmental efforts include working toward using 100% renewable energy, and a longer term goal to stop mining the earth. The full white paper on Apple’s paper and packaging efforts can be read here.