European companies have made great progress in refrigerants development. CO2 as refrigerant is very popular and the technology is already very mature.
A German company, eChiller can use water as refrigerant to produce same or better result than regular refrigerant.
A Swiss company Mirai Index Sagl developed revolutionary technology. They can use air as refrigerant to make cooling system. If the technology becomes mature. We will have boundless resources and all other refrigerant will become obsolete.
Technology is the first productivity. We are shocked and delighted with the newest development in refrigerant field. What the future will be? We are full of expectancy.