First you will need to create Metafields, that will let you fill with the information you want for each product individually.
In your admin page go to Settings, then Metafields, Products, Add definition.
Give it a name, like “Material”, then hit Select content type, and choose Text (I think that’s what you are looking for), and select Multi-line text.
Hit Save.
Now, in your, admin page select Products, enter in any product, scroll down to the bottom, and you will see the Metafield you’ve created, now you can enter the information you want.
Now to have it displayed in the product page of your store, you will need to follow the next instructions:
Go to you admin page and in your active theme hit Customize, select Products, Default Product, in your Product Information hit Add block, select Collapsible tab, and in Tab content at your right, hit Insert dynamic source, select “Material”, hit insert and save.
Hope it works, it worked for me.