Dear__________,

I am writing this letter to call on_________. As some of you may know,________. In face,________.

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It is necessary for us to________. On the one hand,__________. On the other hand,_________. Hesce, it is high time________. Firstly, we should_____________. Secondly,___________.

Please contact us via_________. Please join us in the effort to __________.

Thank you for your paiticipation

Sincerely,

____________

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