R-410A than other refrigerants. R-410A systems thus require service personnel to use different tools, equipment, safety standards, and techniques. Equipment manufacturers are aware of these changes and require the certification of professionals installing R-410A systems. In addition, the AC&R Safety Coalition has been created to help educate professionals about R-410A systems. In accordance with terms and agreement reached in the Montreal Protocol (The Montreal Protocol on Substances that Deplete the Ozone Layer) the United States Environmental Protection Agency has mandated that production or import of R-22 along with other hydrochlorofluorocarbons (HCFCs) be phased out in the United States. In the EU
1987 (What the Fuck Is Going On?) Run-D.M.C. type of old-school rapping"; and "The Penguin Price Guide for Record & CD Collectors" called "1987" an "entirely brilliant example of the art of disc-jockey-as-producer". Giving another retrospective review from across the Atlantic, "Trouser Press" described "1987" as "energetic" and "a loopy dance album that isn't unlike a lot of sampled records, but proceeds from an entirely different cultural understanding." Bill Drummond and Jimmy Cauty were responsible for the concept and production of "1987", its lyrics and the TR-808 beatbox rhythms. Drummond provided rap, and an additional rapper introduced as 'Chike' appears on "Don't Take Five (Take What You