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| American Society of Heating, Refrigerating and Air-Conditioning Engineers |
| www.ashrae.org |
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| The Air-Conditioning, Heating and Refrigeration Institute (AHRI) |
| www.ahrinet.org |
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| Section 608 Technician Certification Programs |
| www.epa.gov |
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| Section 609 Technician Certification Programs |
| www.epa.gov |
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| HVACR Week |
| HVACRWeek Exhibition |
| Visit USA Refrigerants at Booth #1008 at Comforttech in Baltimore, MD, September, 23 24, 2010 |
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