The Sunch'ŏn Calcium Cyanamide Fertilizer Factory is one of North Korea's four major fertilizer plants and is most likely a part of the Sunch'ŏn Vinalon Complex. This factory reportedly produces CW agents, but considering the lack of detailed information in the open source literature, it is difficult to confirm the allegations of CW-related activities at this facility.

Sources:
[1] Kim Wŏn Pong, Kitachosenjimingun no zenbo (Tokyo: Ariadone Kikaku, 1996), p. 127;
[2] Kim Won-pong, Kitachosen jinmingun no zensho [sic] (Tokyo: Ariadone Kikaku, 1996), p. 127, in "DPRK Factories Suspected of Producing Chemical Agents," FBIS Document ID: KPP20010216000106;
[3] Osamu Eya, Kimu Jon Iru Daizukan (Tokyo: Shogakkan, 2000), p. 65;
[4] Osamu Eya, Kimu Jon Iru Daizukan (Tokyo: Shogakkan, 2000), pp. 64-65, in "Alleged Locations of DPRK Nuclear, Biological, Chemical Warfare Facilities Mapped," FBIS Document ID: KPP20010606000075;
[5] Kim Yong Yun, Pukhan, December 1998, pp. 132-143, in "North Korean Chemical Industry," FBIS Document ID: FTS19981230001322;
[6] Kang T'ae Ho, "Yŏnhapkiŏpso/Wŏllyosaengsan Yŏn'gye Trust (Pukhan'gyŏngje)," Hankyoreh Shinmun, 22 March 1994, p. 8, in KINDS, www.kinds.or.kr;
[7] Korea Trade-Investment Promotion Agency, "Hwahakkong'ŏp," 2000, www.kotra.or.kr;
[8] North Korea Information Bank, "Hwahaksan'ŏp," Hyundai Research Institute, 2000, www.nk-infobank.com.