Hollysys didn't respond to requests for comment.

和利时未应记者的要求发表评论。

The main cooperation was on the onboard ATP system, which Hollysys documents describe as components in the nose and tail of trains that act as its' last line of defense in safety.

双方主要的合作领域是车载atp系统，和利时的文件称这一系统安装在高铁列车的车头和车尾，为列车起到“最后一道安全防线”的作用。

Hollysys had a longer relationship with Hitachi, which supplied the Chinese company components for high-speed rail signaling starting in 2005, the year Hollysys says it got its start in the business.

和利时与日立公司的合作关系要更长些。从2005年起，日立就向和利时提供高速铁路信号系统的零部件。和利时说它也是从那年起开始从事高铁信号系统业务的。