"there have always been some people in the United States who spread various rumors out of ulterior motives and attempt to tarnish the image of China,"
As if China really has an image that could be tarnished any worse that what it already is.
This is true. More than one Chinese company has been involved. One of them, Huawei, is a world class fiber optic communications company that wants to be listed on the NYSE. They have built a military network for Iraq.
There is also a report that bin Laden attended meetings in Pakistan between the ChiCom foreign minister and Pakistani foreign minister.