Table:
|  |  |  | Payments Due by Period |  |  |
| --- | --- | --- | --- | --- | --- |
|  | Total | Less than 1 Year | 1-3 Years | 4-5 Years | After 5 Years |
|  |  |  | (in NT$ millions)$ millions) |  |  |
| Long-term debt(1) |  |  |  |  |  |
| Unsecured bonds | 39,940 | 20,660 | 10,590 | 8,690 | — |
| Loans | 51,058 | 18,316 | 19,632 | 13,098 | 12 |
| Lease obligations(2) | 7,128 | 741 | 1,414 | 1,181 | 3,792 |
| Purchase obligations(3) | 38,878 | 29,832 | 2,845 | 1,810 | 4,391 |
| Other long-term obligations(4) | 21,411 | 101 | 12,765 | 8,446 | 99 |
| Total contractual cash obligations | 158,415 | 69,650 | 47,246 | 33,225 | 8,294 |
Paragraphs:
F. Tabular Disclosure of Contractual Obligations
The following table sets forth our contractual obligations and commitments with definitive payment terms on a consolidated basis which will require significant cash outlays in the future as of December 31, 2019.
(1) Assuming the domestic bonds are paid off upon maturity.
(2) Represents our obligations to make lease payments mainly to use machineries, equipment, office and land on which our fabs are located, primarily in the Hsinchu Science Park and the Tainan Science Park in Taiwan, Pasir Ris Wafer Fab Park in Singapore.
(3) Represents commitments for purchase of raw materials and construction contracts, intellectual properties and royalties payable under our technology license agreements. These commitments include the amounts which are not recorded on our balance sheet as of December 31, 2019.
(4) Represents the guarantee deposits and financial liability for the repurchase of other investors’ investment. The amounts of payments due under these agreements are determined based on fixed contract amounts.
Question:
What does Purchase obligations incorporate?
Answer: Represents commitments for purchase of raw materials and construction contracts, intellectual properties and royalties payable under our technology license agreements.