Latest from the CRU data, although Japan in March after the earthquake and tsunami temporary shortage of supply of optical fiber and preform, the first half of 2011, the global core optical fiber production reached 103.4 million km, compared to the first half of 2010 increased by 9%. This is also the highest ever half-year total production. Among them, the second-quarter production was 52.9 million core km, growth of 5%, an increase of 9%. July 1, 2011, at 3.11 about three and a half after the earthquake, the Japanese company Shin-Etsu, including that all of its manufacturing plants in Kashima preform production plant have been fully restored. Part of May and June trade data show that Japanese exports to reduce the fiber and preform, but with the interruption in production problem solving, third-quarter shipments should increase. In some markets, delivery times lengthen, these markets have little or no fiber stock. Industry professionals on the current status of the supply is defined as "tense", but no demand has outstripped supply. Japan's earthquake and tsunami led to tight supply, but many of the major markets of strong growth in demand for fiber is the dominant factor. The second quarter of 2011 based on partial data, the first half of 2011 compared to first half of 2010 demand for fiber optic cable, the regional market growth are: North America 28% Western Europe 13% Eastern Europe 33% Asia 3%, other 26% of the market. Most of the increase is subject to the access network project driven in part by government plans to promote.