The actions of the courts, the letter added, damaged the country's image abroad.

The letter added that the club deserves the "full support of everyone with an interest in the outdoors and its future for the American people."

More plants may be closed "over a period of time," the letter added.

"Please rest assured that your current insurance protection is still valid and will be for quite some time to come," the letter adds.

But the letter added that the assurance was "based on our current product plans."

The letter added that a formal hearing would be held, though it did not describe any of the evidence behind the charges.

The letter added that years of tight budgets had contributed to the current problems.

"The American public has been disappointed," the letter added.

The letter added that these human-rights abuses have existed since 2004.

"It will seriously tarnish the image of China in the world," the letter added.