Here is the info. from Chinese Consulate in Houston

辦理護照旅行證須知及申請表下載（新）
2010/03/20
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三、辦理方式及時間申請人須親自來館辦理，如小孩太小不便來館,小孩父母可代為申請(如僅小孩父母一方來館申請,另一方需出具經公證的授權書)，按領區劃分到大使館或總領館辦理。如需回郵服務，請提供貼足郵資的回郵信封。無需提前預約。不接受郵寄申請。

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隻出具父母一方不去的公證的授權書, 沒說小孩的.
Anyway, write one simple letter by yourself and take your kids with you to any banks or your company accounting dept. They will do the notaration for you for FREE. IT IS EASY. Don't make things complicated.

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• Many thanks! 回複：Here is the info. from Chinese Consulate in Hous -sillywoman- ♀ (0 bytes) () 07/09/2010 postreply 14:05:28