For US-based printers using eco-friendly materials, I've had a great experience with IngramSpark. They offer options for recycled paper and plant-based inks. As for hardcovers, I’ve shifted some of my titles to them and found that they do offer better durability and a longer shelf life, which is great for libraries and collectors. However, they are more expensive to produce, so it depends on your budget and target audience. Also, for my book covers, I used Authors Breeze’s design services. They did an amazing job, and I highly recommend them if you’re looking for something professional and eye-catching. Hope this helps!
Here I am attaching the links for both
Authors Breeze:
https://www.authorsbreeze.com/
IngramSpark:
https://www.ingramspark.com/
