An international contract refers to a contractor who has at least one foreign element, such as the nationality of the parties, the place of the contract, the place of execution of the contract, etc. The time of agreement is an international description in which the two sides of the contract reside in two different countrie. Or that the place of execution of the contract is outside the residence of the two sides.
Mutual Sales Contracts.
Contract for the construction, operation, transfer
Construction contract, ownership, exploitation.
Financing contracts.
Joint venture  Research and Development.
Representative Credits
And there are many international conventions available in the world.