英语翻译我们已经修改了测试架(test rack)当我们发现这个问题的时候虽然当时没有那到你们的图纸做参考,到现在才反馈

We already done changing of test rack when we find this problem.We didn't get any paper to be a sample and that's why we are feedback this problem to you now.The reason is that we didn't see any renew on type A's new paper.We notice you because of we worry about this problem will influence the using of terminal client.加一句 sorry about that.

We have modified the test stand When we discovered that this problem often, although it was not a reference to your drawings, until now this issue feedback to you, because we have not seen any updates...

we have made some changes to the test rack. 第一句，后面的感觉你中文都没有表达清楚