Article 2
1. Where a declaration for release for free circulation is presented in respect of a track chain referred to in Article 1(1), originating in the People’s Republic of China, the net, free-at-Union-frontier price, before duty, of the steel shoes assembled in the track chain referred to in Article 1(1) shall be entered in the relevant field of that declaration. Where the net, free-at-Union-frontier price, before duty, of steel track shoes is lower than 31 % of the net, free-at-Union-frontier price, before duty, of the assembled track chain, or where the net, free-at-Union-frontier price, before duty, of the steel shoes assembled in the track chain is not entered in the declaration, the anti-dumping duties referred in Article 1(3) shall apply to an amount equal to 31 % of the price of the assembled track chain. 2. A valid commercial invoice shall be presented to the Member States' customs authorities. It shall contain information sufficiently detailed to allow the Member States' customs authorities to assess the accuracy of the declared net, free-at Union-frontier price, before duty, of the steel shoes referred to in Article 1(1). 3. Member States shall, on a monthly basis, inform the Commission of the net, free-at-Union-frontier price, before duty, declared for the steel shoes referred to in Article 1(1) imported as part of a track chain referred to in Articles 1(1).