Founded in 1980, SII is built on the four cornerstones of service, quality, technology, and delivery. All of our facilities and our customer service center are ISO 9001:2000 certified. We have been tested and certified to National Sanitation Foundation (NSF) Standard 60 for alum, aqua ammonia, sodium aluminate, and sodium bisulfite products used in potable water treatment. VP Randy Weimer, VP Dan Sundbeck, President Milton Sundbeck, VP Steve MitchenerWhy Do Business With Us? Quality Supplier- ...