SEI Chemical of Northridge, CA has purchased 21st Century Coatings Limited of Vancouver, BC, Canada. Together the two firms offer diverse lines of high-end industrial coatings that utilize fluorinated and unique silicone resins systems that are proven in the fields of anti-corrosion, anti-microbiological, anti-graffiti, anti-stick, marine and high-heat applications. Depending on the product line, company offerings are sold in both industrial and consumer markets.