The Pakistan Ordnance Factories (POF), Pakistan’s largest defense supplier and industrial complex, is a conglomerate consisting of fourteen factories that are central to Pakistan’s conventional arms production. [3] The fourteen factories specialize in munitions ranging from materials such as steel and tungsten, to propellants and explosives, to tanks, artillery, machine guns, and uniforms. 

While primarily engaged in conventional arms production, Rodney Jones et al. assessed that the POF may also be a site for the final assembly of nuclear payloads onto their delivery systems. [4]

Sources:                             

[1] “About Us,” Pakistan Ordnance Factories, accessed 2 February 2011, www.pof.gov.pk.
[2] “Wah – Pakistan Special Weapons Facilities,” Globalsecurity.org, accessed 2 February 2011, www.globalsecurity.org.
[3] “Pakistan Ordnance Factories,” Pakistan Ordnance Factories, accessed 2 February 2011, www.pof.gov.pk.
[4] Rodney W. Jones, Mark G. McDonough, Toby Dalton and Gregory Koblentz, Tracking Nuclear Proliferation: A Guide in Maps and Charts (Washington, DC: Carnegie Endowment for International Peace, 1998), p.145.