I told you that we want first-class goods. So the quality, specification and pnce are clarified in our contract. Do you remember those details?

当初我说过要的是一等品，所以合同里将质量价格都写的很明确，你还记得吗？

We started trading with the informal recyclers, we started training them to segregate the materials based on our quality specifications.

我们开始与非正式回收商进行交易，我们开始培训他们根据我们的质量规格对材料进行分类。