This facility is headquarters for one of the six Divisions of the Second Artillery Corps. The 80301 Unit is headquartered in Shenyang, Liaoning province, and consists of three launch brigades, each with up to three launch battalions. Its DF-21 and DF-3 IRBMs cover the Korean peninsula and Japan, to include Okinawa. At least one of the brigades, equipped with 1,800 kilometer range DF-21s (CSS-5), is concentrated in the area of Tonghua, approximately 80 kilometers north of the North Korean border. R&D on the DF-21 began in 1967 and had its first successful test in 1985. Shortly thereafter, the DF-21 was deployed into an experimental regiment. The DF-21 follow-on, the DF-21A, is expected to have a 1800 kilometer range, with a 600 kilogram warhead.