Mariel USA February 12, 2012 Mariel USAwww.refrigerantguys.com KEYWORDS: AHR Expo HVAC New Products Share This Story Looking for a reprint of this article? From high-res PDFs to custom plaques, order your copy today! You must login or register in order to post a comment. Report Abusive Comment Thank you for helping us to improve our forums. Is this comment offensive? Please tell us why.