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STOPER is a privately owned company based in Bulgaria.
We actively follow the development of the new technologies related to evacuated tube solar water heating.
In the recent few years the developing solar water heating has become a more and more preferred and popular heating option for many consumers. It is a reliable and more effective alternative to electricity and gas heating.
In Bulgaria the evacuated tube solar water heaters have been gradually developing and replacing old water heaters.
The lack of high guality of the low – cost solar water heating collectors in most of the developed