Hoya crassifolia is a native of China and is very much like a carnosa, but has thicker rounder leaves.  It has light pink flowers.  I received this plant as a cutting from the Liddle Nursery in Australia (IML 0142) in 2oo8.  It took 3 years to bring into flower.  It is an easy care very nice plant that I can readily recommend.  Here is the link to a very nice time-lapse video of a wonderful bloom opening on Hoya crassifolia: http://youtu.be/4qbBLDSl3Dg

**New** Here is a video tour of Hoya crassifolia and its close cousin Hoya motoskei: