Evidence of early examples of batik have been found in the Far East, Middle East, Central Asia and India from over 2000 years ago. Batik was practised in China as early as the Sui Dynasty (AD 581-618). Silk batiks have also been discovered in Nara, Japan in the form of screens. They are decorated with trees, animals, flute players, hunting scenes and stylised mountains. By 1677 there is evidence of a considerable export trade, mostly on silk from China to Java, Sumatra, Persia and Hindustan. Indonesia is the area where batik has reached the greatest peak of accomplishment. The Dutch brought Indonesian craftsmen to teach the craft to Dutch warders in several factories in Holland from 1835. The Swiss produced imitation batik in the early 1940s. By the early 1900s the Germans had developed mass production of batiks. Computerisation of batik techniques is a very recent development.