英语翻译：As I knew we also sent you …………

哈哈，估计刚才我回答的一个问题也是你问的。如果是我我会这样写，
As I know, we have also sent you the production samples & wet paint, just as what we done during application testing.

Dear Iris, we can't manange to "spray the paint on the sample" because we cannot control how much paint is sprayed to the sample"

估计你也是外企经常和老外交流的。

我觉得有一处时态上的错误。
As I knOw we also sent you the production samples and wet paint as before that we during testing application

这个定语从句好长，如果不是考试作文建议是使用结构简单点的短句。
清晰明了

我知道我们同时还向您发送了生产样品和油漆未干前就想我们以前做试验程序

亲爱的鸢尾，我们无法管理的“喷油漆的样本” ，因为我们无法控制多少油漆喷涂的范例。