HSK 4
Zhèzhǒng chǎnpǐn de yuánliào láizì guówài.
The raw materials for this product come from abroad.
HSK 5
Yuánliào jiàgé shàngzhǎng le.
The price of raw materials has gone up.
HSK 5
Zhèjiā gōngchǎng yángé kòngzhì yuánliào de zhìliàng.
This factory strictly controls the quality of its raw materials.
