I have seen this animal several times both in Borneo and West Malaysia, crawling over the fissures of tree bark. The wave-like mechanical movement of the limbs makes it look like a some kind of high-tech robotic Japanese toy.
Well, I finally found its name on internet, its called Barydesmus – a tractor millipede from SE Asia. Its a strict vegetarian and preferred to be left alone – thank you.
This particular one was found in a limestone outcrop in Western Sarawak.