Data fabrication at a Toray Industries Inc. subsidiary was caused by the management's lack of interest in quality control and a staff shortage, a report by outside experts said Wednesday.

The quality assurance division at Toray's wholly owned unit Toray Hybrid Cord Inc. was a "highly independent" section placed under direct supervision of the company president, the experts concluded.

There was also pressure to meet delivery dates despite limited manpower and poor work conditions caused by deteriorated measuring equipment, which lead two officials who headed the division to rig data, according to the report.