Hercules Chemical Co. introduces new cryo-tek solar system antifreeze for use in today’s solar systems with closed-loop anti-freeze heat exchangers, radiant tube heating systems and geothermal loops. Hercules’ exclusive Triple Protection formula contains virgin propylene glycol with all-metal corrosion inhibitors to maximize solar system efficiency and help prevent system function damage caused by freezing. Hercules cryo-tek solar system anti-freeze is available at plumbing wholesalers nationwide through OateySCS. www.herchem.com.