BEIJING (AP) — The Chinese manufacturer of Internet-filtering software that must be distributed with all new computers next week has received death threats, state media said Wednesday.

Workers at Jinhui Computer System Engineering Co. received more than 1,000 harassing phone calls this month, according to Zhang Chenmin, the general manager of the company. He said personal information of some of the programmers had been leaked online, and one caller threatened to kill his wife and child.

"Most of the calls came late at night, cursing our staff and uttering obscenities, voicing their resentment against the software," Zhang was quoted as saying by the official Xinhua News Agency.

Phones rang unanswered Wednesday at company headquarters in the central Chinese city of Zhengzhou.