One of the contract types according to the contracted scope is the turn-key contract of
this Section. This contract type, characterized as engineering, equipment and
construction, is contracted for with a single contractor (this contract type is also called
a “design-build contract,” “design and construct,” “all-in contract,” “package deal,” etc.).
When design, procurement (or manufacturing), construction, start-up, and a
performance test run are all contracted for, the contract is referred to as a full turn-key
contract. There is also a contract called the product-in-hand contract, where the above
contract type is further extended, with this contract covering not only the stages before
commissioning but management in the operation stage afterwards.