“GS4PLASTIC srl Società Benefit” was founded by Giovanni Sonzogni after over 20 years of experience in the field of plastics. After his master’s degree in Industrial Chemistry in 2000, he developed his skills as a process technician, 3D packaging engineer and machine and mould designer, working with various technologies such as Stretch Blow Molding (SBM), Extrusion Blow Molding (EBM), and Injection Stretch Blow Molding (ISBM). He is also a professor from 2018 of Plastic Technologies at two Institute Technological School (V school level) in Bergamo area.

I define myself as a passionate innovator of polymers, bottles, technologies and processes who believes in innovation and applied research.


GS4PLASTIC srl SB is an Innovative Start-up and Società Benefit was born in 2020 from the competence of his founder, and thanks to the skills of a passionate team, it was quickly and effectively able to offer complete support such as polymer feasibility, design and engineering, molds and prototyping, innovation projects with machines and technologies, in addition to training and consultancy, which has been provided to some of the most important companies on the market.


We want to promote the use of mechanically and chemically recycled polymers, and work to have a leading role in the circular economy. Our main interesting is to work with recycled polymers and bioplastic for the promotion of the 3R (reduce, reuse and recycle), through process and technology in order to realize sustainable projects and disruptive innovations.

We want to create, during our work, ethic relations with people and our partners to help the future generations to believe that it is possible to work with transparency, honesty and integrity to realize value, business and happiness.


We Together for innovative business

Our mission is to become a company with high knowledge in R&D and sustainability with high plastic competence in order to create innovative and sustainable plastic solutions, generating value and synergy with our partners.