39. | Pledged Assets |
| | | | December 31, | | ||||
Pledged assets | | Pledged to secure | | 2017 | | 2016 | | ||
| | | | (in thousands) | | ||||
Restricted cash in banks(i) | | R&;D projects, oil purchases and guarantees for foreign labors and customs duties | | $ | 87,105 | | | 93,379 | |
Land and building (including investment property) | | Long-term borrowings | | | 42,031,020 | | | 52,076,840 | |
Machinery, equipment and prepayments for equipment | | Long-term borrowings | | | 17,143,591 | | | 27,058,442 | |
| | | | $ | 59,261,716 | | | 79,228,661 | |