DANFOSS:
https://www.danfoss.com/es-es/about-danfoss/news/dcs/what-is-new-with-co2/
EMERSON:
https://www.emerson.com/documents/commercial-residential/valves-controls-system-protectors-for-r-744-en-us-181470.pdf
CARLY
http://www.carly-sa.es/-Componentes-para-el-CO2-R744-.html
CAREL:
https://www.carel.es/everything-for-co2-retail-applications;jsessionid=D6EF206B791D2F36FC87DCDC2F2087F8
BITZER (compresores)
Subcríticos:
https://www.bitzer.de/es/es/compresores-de-piston/octagon-sl-subcritico/
Transcríticos:
https://www.bitzer.de/es/es/compresores-de-piston/octagon-varispeed-transcritico/#!4MTC10F4K
