https://biz.prlog.org/tag/packaged-ac/ packaged ac - Free business directory on PRLog.Org, latest companies listed first. 60 https://biz.prlog.org/specificsystems/ Specific Systems engineers & manufactures explosion proof & severe-duty corrosion resistant HVAC & pressurization units. Since 1974, we have been providing the petroleum industry with quality systems that perform under the most difficult conditions.Fri, 12 Mar 2010 21:13:20 GMT