这是目录和样本书，你看了可对我们的产品有一个大概的了解。

Here are the catalogues and the paper books and they will give you a rough idea about products.

youdao

这是目录和样本书，你看了可对我们的产品有一个大概的了解。

Here are the catalogues and the paper books and they will give you a rough idea about products.

youdao