Products
SI Group’s been providing high-quality products and solutions for over 100 years. Today, we offer leading additive solutions for plastics, rubber, fuels, lubricants, and more. Our broad global footprint spans 19 manufacturing sites and joint ventures across the globe to provide our customers with reliable and consistent products and services.
Applications
Product Technologies
Markets
Our solutions are essential to enhancing the quality and performance of countless industrial and consumer goods. View our solutions by market.
Making a Global Impact
Our solutions are essential to enhancing the quality and performance of countless industrial and consumer goods. View our solutions by industry.
About
SI Group is a global leader in the innovative technology of performance additives, process solutions, active pharmaceutical ingredients, and chemical intermediates.
Our Mission
We innovate and drive change to create value with a passion for safety, chemistry, sustainability, and extraordinary results.
Careers
At SI Group, every one of our employees is a catalyst for change. Our Vision is our destination – and it’s ambitious. Our Mission is what we aim to achieve every day – and it illustrates our passion.
Open Opportunities
Our people bring our vision, mission, and values to life, and growing our team with industry-leading talent is built into the foundation of SI Group.
Latest updates and announcements
October 28, 2025
SI Group Opens New Innovation Center