OPEN 550 ET (MCH-30) and OPEN 650 ET (MCH-36) air filling pumps are designed and manufactured by AEROTECNICACOLTRI, a leading European company specialising in the manufacture of diving equipment and compressed air filling pumps. The products have passed the latest European Union CE certification, in line with 2006/42/CE, 2004/108/CE, EN 12100, EN ISO 13857, EN 60204-1, EN 61000-6-2, EN 61000-6-4, 92/59/CEE, 85/374/CEE and other mechanical engineering standards, electrical standards, noise standards. The output of high pressure breathing air complies with the European Union's EN12021 air quality standard.