原材料 (yuán cái liào): วัตถุดิบและกึ่งสําเร็จรูป

The raw materials for this factory are mainly imported from abroad.

Due to the rise in raw material prices, product costs have also increased.

We must ensure that the quality of raw materials meets the standards.

Recycling raw materials helps protect the environment.

In the production process, the waste of raw materials is a serious problem.