noun
turnkey export
Business term for exporting a complete, ready-to-operate facility or system, where the buyer only needs to 'turn the key' to start operations.
その企業は発展途上国にターンキー方式輸出で工場を建設した。
The company built a factory in a developing country through a turnkey export.
ターンキー alone means 'turnkey' as an adjective or noun, while ターンキー方式輸出 specifically refers to the export of a turnkey project.
Compound of ターンキー (from English 'turnkey') + 方式 (method, system) + 輸出 (export).