Hoya sammannaniana, Hoyas sp. Deep Bell, Hoya sp. EPC 883 and believe it, or not Hoya sp. Sabah are all names for the same plant.  I placed an order with Epiphytica in Thailand in late summer of last year for six plants, and the only plant to survive out of the order was this Hoya of many names.  Here is a first photo of the leaves, which are nothing extraordinary: