(2) These declarations are to be notified to the depositary and are to state expressly the territorial units to which the Convention extends.
(3) If, by virtue of a declaration under this article, this Convention extends to one or more but not all of the territorial units of a Contracting State, and if the place of business of a party is located in that State, this place of business, for the purposes of this Convention, is considered not to be in a Contracting State, unless it is in a territorial unit to which the Convention extends.
(4) If a Contracting State makes no declaration under paragraph (1) of this article, the Convention is to extend to all territorial units of that State.
(1) Two or more Contracting States which have the same or closely related legal rules on matters governed by this Convention may at any time declare that the Convention is not to apply to contracts of sale or to their formation where the parties have their places of business in those States. Such declarations may be made jointly or by reciprocal unilateral declarations.
(2) A Contracting State which has the same or closely related legal rules on matters governed by this Convention as one or more non-Contracting States may at any time declare that the Convention is not to apply to contracts of sale or to their formation where the parties have their places of business in those States.
(3) If a State which is the object of a declaration under the preceding paragraph subsequently becomes a Contracting State, the declaration made will, as from the date on which the Convention enters into force in respect of the new Contracting State, have the effect of a declaration made under paragraph (1), provided that the new Contracting State joins in such declaration or makes a reciprocal unilateral declaration.
Any State may declare at the time of the deposit of its instrument of ratification, acceptance, approval or accession that it will not be bound by subparagraph (1)(b) of article 1 of this Convention.