China News Service, May 29, according to the Ministry of Commerce website, the Ministry of Commerce issued an announcement on the 29th that according to the "Anti-dumping Regulations of the People's Republic of China", on May 30, 2019, the Ministry of Commerce issued Announcement No. 23 of 2019. Decided to conduct anti-dumping investigation on imported polyphenylene sulfide originating in Japan, the United States, South Korea and Malaysia. In view of the complexity of the case, in accordance with the provisions of Article 26 of the Anti-dumping Regulations of the People ’s Republic of China, the Ministry of Commerce decided to extend the investigation period of this case by 6 months, that is, the deadline is November 30, 2020.