We not only specialize in supplying high-quality impurity standards but also customized synthesis of impurity standards. The volume of our products ranges from milligram to kilogram scales. Our customers come from pharmaceutical and biotech companies, research institutions and so on. Our successful business development is rooted in our high-quality and professional attitude towards service and scientific innovation. Since its founding, Toref has been devoting itself to developing our proprietary technologies alongside the latest in pharmaceutical technological developments, while realizing a scalable and flexible production model to meet all of our customers’ requirements.