The London-based print marketing services provider said the move reflected its commitment to remaining a key player in the UK print industry.
"We are living in a digital world but print is still a vital component of effective brand communication and we don’t see this changing any time soon," said group marketing director Helen Robinson.
"Print is still a key part of St Ives Group and it’s very important for us to support it in every way that we can."
Two Sides is an initiative by companies from the Graphic Communication Value Chain, which promotes the responsible production and use of print and paper.
It provides users with verifiable information about why print and paper is an attractive, practical and sustainable communications medium.
St Ives chief executive Patrick Martell said: “Joining Two Sides allows St Ives to demonstrate an ongoing commitment to sourcing printed materials from the most sustainable and environmentally friendly suppliers throughout the production process.”
The firm said it remains committed to continuous improvement in its environmental performance.
"We have a number of initiatives in place, including improving the efficiency of our operations to minimise the use of materials, the generation of waste and to prevent pollution of the environment," said Robinson.
