"The acquisition of these items is especially critical for states like the DPRK that are attempting to advance their ballistic missile capability. -"Nitrogen stabilized duplex stainless steel (N-DSS) having all of the following characteristics: a) containing at least 18 percent by weight chromium and 4.5-8.0 percent by weight nickel; b) a ferritic-austenitic microstructure (also referred to as a two-phase microstructure) of which at least 10 percent is austenite by volume (according to ASTM E-1181-87 or national equivalents); and c) having any of the following forms: i. ingots or bars having a size of 100 mm or more in each dimension; ii. sheets having a width of 600 mm or more and a thickness of 5 mm or less; or iii. tubes having an outer dimension of 600 mm or more and a wall thickness of 5 mm or less." Nitrogen stabilized duplex stainless steels very nearly replicate the material strength requirements of titanium stabilized duplex stainless steel, which is MTCR controlled. This specialized steel is particularly useful in liquid propellant missile applications given its high strength, ease of welding and resistance to corrosive liquid propellant oxidizers such as inhibited red fuming nitric acid (IRFNA). -"Graphite designed or specified for use in EDM machines." Electrical discharge machining (EDM) graphite has the ability to significantly contribute to ballistic missile programs by virtue of its use in EDM machines producing complex and highly precise cuts such as required for liquid rocket engine components. This level of machining is not required in the manufacture of farming. -"5 mm or thinner stainless steel sheets." Stainless steel in thin sheet form is highly sought after by some ballistic missile programs of concern for rocket motor casings and pressure vessels. -"Para-aramid fiber (Kevlar and other Kevlar-like), filament and tape." Para-aramid fibers such as Kevlar and other Kevlar-like filaments and tapes are usable in the fabrication of solid propellant rocket motor cases, rocket motor nozzles and nozzle extensions, propellant tanks, nose tips, and missile airframe and warhead structures. -"Austenitic stainless steel." Certain austenitic steel alloys possess the strength and corrosion resistance to be employed in many liquid missile applications including propellant tanks and missile interstages. -"Aerospace-grade aluminum in bar and sheet form." Aerospace grade aluminum alloys with high strength and corrosion resistance are useful in liquid ballistic missile structures and airframes. -"Fine-grain spherical aluminum powder (500 micron and below, with purity equal to or greater than 75 percent)." Aluminum powder is used as a fuel substance in solid rocket motor propellant formulations. The use of spherical aluminum powder allows higher aluminum loading, with a corresponding increase in propellant performance. "