Petrobart Limited (hereinafter called “Petrobart”) is a company registered in Gibraltar. On 23 February 1998, Petrobart as Supplier and the state joint stock company Kyrgyzgazmunaizat (hereinafter called “KGM”) as Purchaser concluded Goods Supply Contract No. 1/98–PB (hereinafter called “the Contract”) the subject–matter of which was defined as follows: