请大家帮我翻译一下这封信！

Dear yao,

For our Printed Circuit Board customers using Chinese vendors, please be aware of the

following air quality policy announcement from Chinese authorities:

In preparation for the Olympics, China has announced a factory shutdown for 9 weeks to clear

smog and improve air quality in a 200 kilometer radius of Beijing. The shutdown begins July

17th and will extend until September 20th. Beijing, Tianjin, Hebei, Shanxi, Inner Mongolia

and Shandong provinces are affected by the shutdown.

If air quality does not improve before the start of the Olympics, there may be an expansion

of the shutdown. There are concerns there could also be a bottleneck at two main ports.

All this to say that if you have a PCB vendor in the affected area, we are available to take

care of your printed circuit board requirements. In addition to our large fabrication

facility here in

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