washington twelve u.s. senators urge wednesday national security review panel reject chinese aluminum giant zhongwang international group ltd propose 2.3 billion purchase u.s. aluminum products maker aleris corp. senators ask treasury secretary jack lew letter launch review deal committee foreign investments unite state ultimately reject ground would damage u.s. defense industrial base zhongwang purchase aleris would directly undermine national security include jeopardize u.s. manufacture base sensitive technologies industry already devastate effect china market distort policies create serious risk sensitive technologies knowhow transfer china imperil u.s. defense interest senators write deal announce two months ago would give one world large makers extrude aluminum products access u.s. technology customers include boeing co u.s. european automakers increasingly turn aluminum come another zhongwang subsidiary embroil dispute u.s. import duties amid broad trade tensions u.s. aluminum industry china u.s. commerce department currently investigate china zhongwang hold ltd allegations evade u.s. import duties extrude products ship third countries letter lew sign republican rob portman ohio aleris base democrats ron wyden charles schumer bob casey joe manchin kirsten gillibrand joe donnelly debbie stabenow jeff merkley amy klobuchar tammy baldwin al franken say review committee need cautious potential sensitive research data transfer china include data military applications advance model techniques high-strength alloy design light armor material despite national security importance nation aluminum sector industry continue decimate china market distort policies contribute vast overcapacity senators write china overcapacity aluminum directly contribute severe reductions u.s. domestic production smelters unable compete force close closure imperil nation ability ensure reliable supply strategic materials time crisis write treasury spokeswoman decline comment letter add information file cfius law disclose public treasury comment specific cfius case aleris say statement react letter company u.s. facilities produce defense-related products technology aluminum plate use defense products widely use industry facilities u.s. produce aluminum car truck exteriors gutter roof material aleris say less one percent sales go defense applications none goods produce u.s. zhongwang spokeswoman say statement cfius file transaction voluntary company u.s. subsidiary connection chinese government add transaction bring additional resources capital aleris change management employees business strategies twelve u.s. senators urge security rejection china aluminum deal