August 18th, People's Republic of China Ministry of Commerce issued on the optical fiber preform for a final review of anti-dumping notice, announcement shows that the Ministry of Commerce decided since August 19, 2017, imported optical fiber preform originating in Japan and the United States. The anti-dumping measures applicable to the final review. The survey date since August 19, 2017, ended in August 18, 2018, for a period of one year. At the same time, according to the Ministry of Commerce, the Customs Tariff Commission of the State Council decided in the period of anti-dumping final review of the investigation, imported optical fiber preform originating in Japan and the United States continue to stick in accordance with the Ministry of Commerce in 2015 twenty-fifth issued announcement of the taxation scope and tax levy anti-dumping duties.