Factory has specifications for purchased materials.

工厂有采购物料规范。

youdao

B. Substantial increases in the cost of purchased materials.

购买材料的成本大幅增加。

youdao

The first step of my responsibilities were inspecting purchased materials.

我的工作内容是对采购回来的材料进行检验，报检。

youdao

The source did not say who may have purchased the materials.

CNN: Denver apartment searched in terror probe

And now some Chinese manufacturers are benefiting from those materials they purchased at lower prices.

FORBES: China Will Meet Official GDP Target

If new instructional materials are purchased, I question to verify they are available in both languages.

WHITEHOUSE: It Takes Heart to Succeed