Celegon is an Italian company based in Mirano near Venice. In its 40 years of experience in furnishing solutions they have  designed, developed and produced several option, among which the innovative Ergon system, which enables a rototraslating movement on internal doors.
Celegon isn't a door manufacturer. What they do is selling Ergon system to carpenters and hardware stores. 
 
How does a swinging-sliding door work?
Their website www.celegon.it easily shows Ergon system functioning.
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