SIS is the national leader in the manufacturing of non-metallic machined, turned, and cut parts. Our commitment to quality, service, and competitive pricing has expanded our business worldwide. Our full line of manufacturing equipment coupled with our highly qualified and professional staff are ready to meet your most complex needs. With our attention to detail, modern plant and equipment, and honed ISO 9001:2008 processes, excellence is guaranteed in all of our products. Click below to view our capabilities!