Greenpeace said that technology titans like Samsung Electronics, Amazon and Huawei get low marks for their environmental impact.

The report issued today faults many of the biggest technology companies for failing to deliver on commitments to reduce emissions of greenhouse gases, use more recycled materials and phase out use of toxic materials.

Greenpeace USA’s Guide to Greener Electronics assessed 17 global tech companies. It said that companies like Samsung and Huawei fell short of Amsterdam-based Fairphone and Apple in various areas.

It said that tech companies’ manufacturing processes are not as environmentally friendly as their innovative images might suggest. The report urged the companies to use more renewable energy, remove hazardous chemicals and other materials from their products and design longer-lasting devices to help reduce waste.