尊敬的先生：
500个样品已通过DHL寄出并将于6天内到达.编号：9709304032.货物到达后请通知我们.此外,请注意检查我们使用的纸质管内包装.如果纸质管内包装没有损坏,以后我们也将使用它来进行内包装,但是以后的纸质管壁厚会稍微薄一些.期待您的回复.请问有语法错误吗？Please comfirm when you receive.In addition,pay attention to the inner packing which we using paper pipe.这两句有点别扭。如果是我，我会写Please inform us after receiving the products. In addition, pay attention to the inner packing which we use paper pipe.通知我们。which we using不符合语法。